Science

Science and health news. Science is the pursuit of knowledge about the natural world through systematic study and experimentation. It spans various fields such as biology, chemistry, physics, and earth sciences. Scientists observe phenomena, form hypotheses, conduct experiments, and analyze results to understand laws and principles governing the universe. Science has driven technological advancements and our understanding of everything from the tiniest particles to the vastness of space

Dolphins dying in Amazon lake made shallow by drought

TEFE, Brazil — The carcass of a baby dolphin lay on the sand bank left exposed by the receding waters in an Amazon lake that has been drying up during the worst drought on record. 

Researchers recovered the dead animal on Wednesday and measured water temperatures that have been rising as the lake’s level drops. In last year’s drought, more than 200 of the endangered freshwater dolphins died in Lake Tefe from excessive water temperatures. 

“We’ve found several dead animals. Last week, we found one a day on average,” said Miriam Marmontel, head of the dolphin project at the Mamiraua Institute for Sustainable Development.  

“We’re not yet associating the deaths with changes in water temperatures, but with the exacerbation of the proximity between human populations, mainly fishermen, and the animals,” she said. 

With branches of major rivers in the Amazon basin drying up in this year’s critical drought, the lake connected to the Solimoes River has shrunk, leaving less room for the dolphins in their favorite habitat. 

The lake’s main channel is 2 meters deep and roughly 100 meters wide, and it is used by all the boat traffic, from canoes to heavy ferries, Marmontel said. Two dolphins were killed recently when boats ran into them in the shallow water. 

“Nobody thought this drought would come so quickly or imagine that it would surpass last year’s drought,” fisherman Clodomar Lima said. 

While the dolphin deaths are nowhere close to last year’s toll, the dry season has more than a month to go and water levels will continue to decline, the researcher said. 

And it is not just the rare dolphin species that are suffering. Riverine communities across the Amazon are stranded by the lack of transport on waters too shallow for boats, and their floating houses are now on solid ground. 

Even houses built on stilts over water are now high and dry a distance from the river shore. 

Lake Tefe resident Francisco Alvaro Santos said it was the first time ever that his floating house was out of the water. 

“Water is everything to us. It is part of our daily lives, the means of transportation for everyone who live here,” said Santos. “Without water we are nobody!”

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This US city is hailed as a vaccination success. Can it be sustained?

LOUISVILLE, Kentucky — On his first day of school at Newcomer Academy, Maikel Tejeda was whisked to the school library. The 7th grader didn’t know why.

He soon got the point: He was being given make-up vaccinations. Five of them.

“I don’t have a problem with that,” said the 12-year-old, who moved from Cuba early this year.

Across the library, a group of city, state and federal officials gathered to celebrate the school clinic, and the city. With U.S. childhood vaccination rates below their goals, Louisville and the state were being praised as success stories: Kentucky’s vaccination rate for kindergarteners rose 2 percentage points in the 2022-23 school year compared with the year before. The rate for Jefferson County — which is Louisville — was up 4 percentage points.

“Progress is success,” said Dr. Mandy Cohen, director of the Centers for Disease Control and Prevention.

But that progress didn’t last. Kentucky’s school entry vaccination rate slipped last year. Jefferson County’s rate slid, too. And the rates for both the county and state remain well below the target thresholds.

It raises the question: If this is what success looks like, what does it say about the nation’s ability to stop imported infections from turning into community outbreaks?

Local officials believe they can get to herd immunity thresholds, but they acknowledge challenges that includes tight funding, misinformation and well-intended bureaucratic rules that can discourage doctors from giving kids shots.

“We’re closing the gap,” said Eva Stone, who has managed the county school system’s health services since 2018. “We’re not closing the gap very quickly.”

Falling vaccination rates

Public health experts focus on vaccination rates for kindergartners because schools can be cauldrons for germs and the launching pad for community outbreaks.

For years, those rates were high, thanks largely to mandates that required key vaccinations as a condition of school attendance.

But they have slid in recent years. When COVID-19 started hitting the U.S. hard in 2020, schools were closed, visits to pediatricians declined and vaccination record-keeping fell off. Meanwhile, more parents questioned routine childhood vaccinations that they used to automatically accept, an effect that experts attribute to misinformation and the political schism that emerged around COVID-19 vaccines.

A Gallup survey released last month found that 40% of Americans said it is extremely important for parents to have their children vaccinated, down from 58% in 2019. Meanwhile, a recent University of Pennsylvania survey of 1,500 people found that about 1 in 4 U.S. adults think the measles, mumps and rubella vaccine causes autism — despite no medical evidence for it.

All that has led more parents to seek exemptions to school entry vaccinations. The CDC has not yet reported national data for the 2023-24 school year, but the proportion of U.S. kindergartners exempted from school vaccination requirements the year before hit a record 3%.

Overall, 93% of kindergartners got their required shots for the 2022-23 school year. The rate was 95% in the years before the COVID-19 pandemic.

Officials worry slipping vaccination rates will lead to disease outbreaks.

The roughly 250 U.S. measles cases reported so far this year are the most since 2019, and Oregon is seeing its largest outbreak in more than 30 years.

Kentucky has been experiencing its worst outbreak of whooping cough — another vaccine-preventable disease — since 2017. Nationally, nearly 14,000 cases have been reported this year, the most since 2019.

Persuading parents

The whooping cough surge is a warning sign but also an opportunity, said Kim Tolley, a California-based historian who wrote a book last year on the vaccination of American schoolchildren. She called for a public relations campaign to “get everybody behind” improving immunizations.

Much of the discussion about raising vaccination rates centers on campaigns designed to educate parents about the importance of vaccinating children — especially those on the fence about getting shots for their kids.

But experts are still hashing out what kind of messaging work best: Is it better, for example, to say “vaccinate” or “immunize”?

A lot of the messaging is influenced by feedback from small focus groups. One takeaway is some people have less trust in health officials and even their own doctors than they once did. Another is that they strongly trust their own feelings about vaccines and what they’ve seen in Internet searches or heard from other sources.

“Their overconfidence is hard to shake. It’s hard to poke holes in it,” said Mike Perry, who ran focus groups on behalf of a group called the Public Health Communications Collaborative.

But many people seem more trusting of older vaccines. And they do seem to be at least curious about information they didn’t know, including the history of research behind vaccines and the dangers of the diseases they were created to fight, he said.

Improving access

Dolores Albarracin has studied vaccination improvement strategies in 17 countries, and repeatedly found that the most effective strategy is to make it easier for kids to get vaccinated.

“In practice, most people are not vaccinating simply because they don’t have money to take the bus” or have other troubles getting to appointments, said Albarracin, director of the communication science division within Penn’s Annenberg Public Policy Center.

That’s a problem in Louisville, where officials say few doctors were providing vaccinations to children enrolled in Medicaid and fewer still were providing shots to kids without any health insurance. An analysis a few years ago indicated 1 in 5 children — about 20,000 kids — were not current on their vaccinations, and most of them were poor, said Stone, the county school health manager.

A 30-year-old federal program called Vaccines for Children pays for vaccinations for children who Medicaid-eligible or lack the insurance to cover it.

But in a meeting with the CDC director last month, Louisville health officials lamented that most local doctors don’t participate in the program because of paperwork and other administrative headaches. And it can be tough for patients to get the time and transportation to get to those few dozen Louisville providers who do take part.

The school system has tried to fill the gap. In 2019, it applied to become a VFC provider, and gradually established vaccine clinics.

Last year, it held clinics at nearly all 160 schools, and it’s doing the same thing this year. The first was at Newcomer Academy, where many immigrant students behind on their vaccinations are started in the school system.

It’s been challenging, Stone said. Funding is very limited. There are bureaucratic obstacles, and a growing influx of children from other countries who need shots. It takes multiple trips to a doctor or clinic to complete some vaccine series. And then there’s the opposition — vaccination clinic announcements tend to draw hateful social media comments. 

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Parts of US Midwest could offer fall’s most vibrant foliage

PORTLAND, Maine — Fall is back, and bringing with it jack-o’-lanterns, football, pumpkin spice everything and — in some parts of the country — especially vibrant foliage.

Leaves around the northern United States are starting to turn orange, yellow and red, inspiring legions of leaf lovers to hop in their cars and travel to the countryside for the best look at fall’s fireworks. Leaf peeping — the act of traveling to witness nature’s annual kaleidoscope — contributes billions of dollars to the economy, especially in New England and New York.

But this year, some of the most colorful displays could be in the Midwest. AccuWeather, the commercial forecasting service, said in early September that it expects especially vibrant foliage in states such as Michigan and Illinois.

The service also said powerful, popping colors are expected in upstate New York and parts of Pennsylvania, while New England will follow a more typical color pattern. But that doesn’t mean New England travelers will miss out.

Maine, the most forested state in the country, had “an abundance of daily sunshine with just the right amount of rainfall to set the stage for a breathtaking foliage season,” said Gale Ross, the state’s fall foliage spokesperson. Color change and timing depend on the weather in the fall, but cooler nighttime temperatures and shorter days should enhance the colors, Ross said.

“The growing season of 2024 has been excellent for trees, supporting tree health and resilience that should lead to brilliant fall colors throughout Maine,” said Aaron Bergdahl, the state’s forest pathologist.

Fall colors peak at different times around the U.S., with the foliage season sometimes starting not long after Labor Day in the far northern reaches of the country and extending into November further to the south. In Maine alone, peak foliage can arrive in the northern part of the state in late September and not arrive in coastal areas until close to Halloween.

Leaf turn happens when summer yields to fall and temperatures drop and the amount of sunlight decreases. Chlorophyll in leaves then breaks down, and that allows their fall colors to shine through before leaf drop.

However, weather conditions associated with climate change have disrupted some recent leaf peeping seasons. A warming planet has brought drought that causes leaves to turn brown and wither before reaching peak colors.

Other enemies of leaf peeping include heat waves that cause leaves to fall before autumn arrives and extreme weather events like hurricanes that strip trees of their leaves. A summer heatwave in the Pacific Northwest in 2021 caused a condition called “foliage scorch” that prematurely browned leaves.

This year in Maine, leaf turn was still very sparse in most of the state as late September approached, but the state office of tourism was already gearing up for an influx of tourists. Northern Maine was already experiencing moderate color change. And neighboring New Hampshire was expecting about 3.7 million visitors — more than twice the state’s population.

“It’s no surprise people travel from all over the world to catch the incredible color,” said New Hampshire Travel and Tourism Director Lori Harnois.

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Climate protesters say pace of change isn’t fast enough

NEW YORK — Six years after a teenage Greta Thunberg walked out of school in a solitary climate protest outside of the Swedish parliament, people around a warming globe marched in youth-led protest, saying their voices are being heard but not sufficiently acted upon.

Emissions of heat-trapping gases and temperatures have been rising and oil and gas drilling has continued, even as the protests that kicked off major weeklong climate events in New York City have become annual events. This year, they come days before the United Nations convenes two special summits, one concentrating on sea level rise and the other on the future.

The young people who organized these marches with Fridays for Future said there is frustration with inaction but also hope. People marched in Berlin, Rio de Janeiro, New Delhi and elsewhere, but the focus often is in New York City because of Climate Week NYC. Diplomats, business leaders and activists are concentrating their discussions on the money end of fighting climate change — something not lost on protesters.

“We hope that the government and the financial sector make polluters pay for the damage that they have imposed on our environment,” said Uganda Fridays for Future founder Hilda Flavia Nakabuye, who was among a few hundred marching in New York Friday, a far cry from the tens of thousands that protested in a multigroup mega-rally in 2023.

The New York protest wants to take aim at “the pillars of fossil fuels” — companies that pollute, banks that fund them and leaders who are failing on climate, said Helen Mancini, an organizer and a senior at the city’s Stuyvesant High School.

“A lot of older people want to make sure the economy is intact, and that’s their main concern,” said Julia Demairo, a sophomore at Pace University. “I think worrying about the future and the environment is worrying about the economy.”

On a day that was at least 8 degrees warmer than average, protest signs included “This is not what we mean by Hot Girl Summer,” while others focused on the theme of fighting the coal, oil and gas industries: “Youth Didn’t Vote for Fossil Fuels,” “Don’t Be a Fossil Fool” and “Climate Crisis = Extermination By Capitalism.”

Nakabuye said she was in New York to represent Uganda “that is bearing the brunt of the climate crisis.”

“We feel like we are creating an impact in the community. However, we are not listened to enough; there is more that needs to be done, especially right now when the climate catastrophes are intensifying,” said Nakabuye. “We need to even raise our voices more to demand change and to demand that fuels should end.”

In the six years since Thunberg founded what became Fridays for Future, global carbon dioxide emissions from the burning of fossil fuels have increased by about 2.15%, according to Global Carbon Project, a group of scientists who monitor carbon pollution.

The growth of emissions has slowed compared with previous decades and experts anticipate peaking soon, but that’s a far cry from the 43% reduction that a U.N. report said is needed to keep temperature increases to an agreed-upon limit.

Since 2019, carbon dioxide emissions from coal have increased by nearly 900 million metric tons, while natural gas emissions have increased slightly and oil pollution has dropped a tiny amount, according to the International Energy Agency, or IEA. That growth has been driven by China, India and developing nations.

But emissions from advanced or industrialized economies have been falling and in 2023 were the lowest in more than 50 years, according to the IEA. Coal emissions in rich countries are down to levels seen around the year 1900, and the United Kingdom next month is set to shutter its last coal plant.

In the past five years, clean energy sources have grown twice as fast as fossil fuels, with solar and wind individually growing faster than fossil fuel-based electricity, according to the IEA. Developing countries — where more than 80% of the world population lives — say that they need financial help to curb their increasing use of fossil fuels.

Since 2018, the globe has warmed more than 0.29 degrees Celsius, with last year setting a record for the hottest year and this year poised to break that mark, according to the U.S. National Oceanic and Atmospheric Administration and the European climate agency Copernicus.

“We’re making progress, even if it’s slow progress,” said 17-year-old Ashen Harper of Connecticut, a veteran protester turned organizer. “Our job right now is to accelerate that progress.”

In Berlin, hundreds of people took to the streets, although in fewer numbers than in previous years. Activists held up signs saying, “Save the Climate” and “Coal is Over!” as they watched a gig put on outside the German Chancellor’s Office. Protesters in London held up letters spelling out “Pay Up,” calling for the country to pay more to adapt to climate change and transition away from fossil fuels.

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Congo struggles to contain mpox; here’s why

KAVUMU, Congo — Health authorities have struggled to contain outbreaks of mpox in Congo, a huge central African country where a myriad of existing problems makes stemming the spread particularly hard.

Last month, the World Health Organization declared the outbreaks in Congo and about a dozen other African countries a global health emergency. And in Congo, scientists have identified a new strain of mpox that may spread more easily. It has reached areas where conflict and the displacement of a large number of people have already put health services under pressure.

Overall, Congo has more than 21,000 of the 25,093 confirmed and suspected mpox cases in Africa this year, according to WHO’s most recent count.

Has Congo seen cases of mpox before?

Yes, Congo is one of the African countries where mpox has been endemic for decades.

Mpox, once known as monkeypox, comes from the same family of viruses as smallpox but causes milder symptoms such as fever. People with more serious cases can develop skin lesions. More than 720 people in Africa have died in the latest outbreaks, mostly in Congo.

Mpox is a zoonotic disease, meaning it can spread to humans from infected animals. In the global mpox outbreak of 2022, the virus spread between people primarily through sex and close physical contact.

What changed in Congo?

In September 2023, mpox spread to Congo’s eastern province of South Kivu; it had previously been seen in the center and far west. Scientists then identified a new form of mpox in South Kivu that may be more infectious.

The WHO said that from the outbreak in South Kivu, the virus spread among people elsewhere in the country, arriving in neighboring province North Kivu. Those two provinces — some 2,000 kilometers from the capital, Kinshasa — face escalating violence, a humanitarian crisis and other issues.

What are the problems in eastern Congo?

More than 120 armed groups have been fighting each other and the Congolese army for years in the eastern part of the country over the control of minerals. That has forced millions of people fleeing violence into refugee camps or nearby towns.

That means mpox is hitting already-stretched health facilities. Dr. Musole Mulambamunva Robert, medical director of the Kavumu hospital in eastern Congo, said it is “truly a challenge” — sometimes treating as many as four times the facility’s capacity for patients.

With more than 6 million displaced people in the east, authorities and aid agencies were already struggling to provide food and healthcare, while fighting other diseases such as cholera. Many people have no access to soap, clean water or other basics.

Some eastern Congo communities are out of reach of health clinics — roads are unreliable, and hourslong risky boat trips are sometimes the only means of transport, said Mercy Muthee Lake of the International Federation of Red Cross and Red Crescent.

People can be more susceptible to severe mpox cases because of malnutrition and undiagnosed HIV, she said.

She also said health workers in eastern Congo have requested more mpox training as medications to treat fever and ease pain run out.

Health authorities “are up against it because it’s such a complex area,” said Chris Beyrer, of Duke University’s Global Health Institute.

What about vaccines?

Africa has no capacity to produce mpox vaccines. Around 250,000 doses have arrived in Congo from the European Union and the United States, and more are expected. Congolese authorities say they need around 3 million vaccines. It will likely be weeks before any vaccines reach people in eastern Congo.

For now, the vaccine is approved only for adults. There’s limited evidence of how it works in children.

Vaccines are desperately needed, but they’re just “an additional tool,” said Emmanuel Lampaert, the Congo representative for Doctors Without Borders. The key, Lampaert said, is still identifying cases, isolating patients, and executing grassroots health and education campaigns.

Local conditions make that trying — Lampaert noted it’s almost impossible to isolate cases among poor, displaced people.

“Families with six to eight children are living in a hut, which is maybe the space of the bed we are sleeping in,” he said. “So, this is the reality.”

Why are critics blasting the mpox response?

Unlike the millions of dollars that poured into Congo for Ebola and COVID aid, the response to mpox has been sluggish, many critics say.

Health experts say the sharp contrast is due to a lack of both funds and international interest.

“Ebola is the most dangerous virus in the world, and COVID wiped out the world economy,” said professor Ali Bulabula, who works on infectious diseases in the medical department at Congo’s University of Kindu. “While mpox is a public health emergency of international concern, there is a lack of in-depth research and interest in the virus, as it’s still seen as a tropical disease, localized to Africa with no major impact on Western economies.” 

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UN report: Debt crisis undermines AIDS eradication in Africa

Harare, Zimbabwe — A new report released by the main United Nations agency for action on AIDS and HIV says growing public debt is choking sub-Saharan African countries, leaving them with little fiscal room to finance critical HIV services.

In the report, launched ahead of the 79th session of the U.N. General Assembly in New York, Winnie Byanyima, the executive director of UNAIDS, asks the international community for more funding to ensure Africa eliminates AIDS by 2030.

She said Africa, which accounts for the largest number of people living with HIV — some 26 million out of 40 million globally — is overwhelmed by public debt.

Robert Shivambu, UNAIDS communication officer, told VOA: “The region’s success in having reduced new HIV infections by 56% since 2010 will not be sustained if fiscal space is constrained.”

Shivambu said the U.N. believes that when debt payments hinder countries’ ability to effectively look after health care needs of their people, global health security is put at risk.

Zimbabwe is one of the countries fighting to reduce the rate of HIV infection while dealing with high debt.

On Friday, parliament Speaker Jacob Mudenda told colleagues that the country had made strides in fighting HIV/AIDS, starting in 1999 as a pioneer of the AIDS levy — a 3% income tax for individuals and 3% tax on profits of employers.

He said that the budget of $387 million for HIV programs — largely foreign sponsored — was no longer enough and that there was need to expand the tax base.

“Let’s create wealth, when that wealth is created from our wealth, including mineral resources, we are going to be able to expand the tax base,” he said.

“From that expanded tax base we will be able as parliament to come with a very stout budget. These donations are going to dwindle, slowly but surely. This current funding level still falls far short of the estimated $500 million needed annually to achieve [the] ambitious goal of the Zimbabwe national AIDS strategic plan, especially with over 1 million people living with HIV now on anti-retroviral therapy.”

Mudenda declined to say if servicing Zimbabwe’s debt — which stands at $17.5 billion, according to the African Development Bank — was one reason funding for HIV programs is falling short.

Zimbabwe is battling to service its debt so that it can resume receiving loans from multilateral development banks such as the IMF and World Bank.

Shivambu said, “Public debt needs to be urgently reduced and domestic resource mobilization strengthened to enable the fiscal space to fully fund the HIV response and end AIDS. World leaders cannot let a resource crunch derail global progress to end AIDS as a public health threat by 2030.”

That’s the message UNAIDS officials will take to the high-level summit of the U.N. General Assembly beginning next week.

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Mpox spreads at alarming rate among children in Burundi

GENEVA — The United Nations Children’s Fund, or UNICEF, warned Friday that children in Burundi are bearing the brunt of the mpox outbreak, with cases of this deadly, infectious disease spreading at an alarming rate among a young population.

“Of the nearly 600 reported cases, two-thirds are in children under 19. The situation has escalated rapidly, with a more-than-40% increase in cases over the past three weeks,” Dr. Paul Ngwakum, UNICEF’s regional health adviser for Eastern and Southern Africa, told journalists in Geneva via video link Friday.

Ngwakum, who currently is on a visit to Burundi, said, “The fear expressed by the parents and the resilience of communities in the face of this public health crisis” and the rapid escalation of the disease “were striking.”

Speaking from the capital, Bujumbura, he said the rise of mpox among children under the age of 5 is of particular concern as they represent 30% of the reported cases. This, he said, underscores the urgent need for targeted interventions to protect children from becoming infected as schools have reopened this week.

“UNICEF is supporting the Ministry of Education to implement health measures in schools, train staff to recognize early symptoms of mpox and reinforce hand hygiene. We aim to ensure that all children can safely return to school and minimize educational disruptions,” he said, noting that this was “a rapidly evolving situation.”

Even amid the grim situation, he observed that Burundi has had no deaths from mpox, formerly known as monkeypox. He said this provides “an opportunity to end this outbreak in a very short time period.”

“The geographical area is still limited, and with concerted effort from all partners, we can limit the spread, contain the virus, and potentially end the outbreak with no lives lost,” said Ngwakum.

He added that “it was difficult to make firm statements regarding when the outbreak could be brought under control,” both in Burundi and the wider African region, a sentiment echoed by the World Health Organization.

WHO spokesperson Dr. Margaret Harris told journalists, “The response to the outbreak is made more difficult by the context, with insecurity in the affected areas, and concurrent outbreaks of other diseases including measles and chickenpox. WHO is on the ground, working to stop these outbreaks.”

So far this year, the WHO reports there have been more than 25,000 suspected mpox cases and 723 deaths among suspected cases in Africa. The most heavily infected country is the Democratic Republic of Congo, with 21,835 suspected cases and 717 deaths, followed by Burundi with 1,489 suspected cases and no deaths and Nigeria with 935 suspected cases and no deaths.

“Vaccination is going to be a very useful tool, particularly for trying to break the chains of transmission,” Harris said. “But the virus primarily spreads through close personal contact within families. And when people are living in difficult conditions, if they do not have access to the materials, to the soap, to the clean bedding, to the clean clothing, it is very, very difficult for them to not transmit.

“Many of the children who we have seen who have sadly died in the Democratic Republic of the Congo were severely malnourished, had suffered the effects of conflict, and perhaps also had other diseases at the same time. … It may indeed be that this population cannot respond immunologically to yet another threat,” she warned.

While affirming the importance of vaccines in the fight against mpox, UNICEF representative Ngwakum observed that “unfortunately,” the vaccines that are available now “cannot be used for children.”

“I do not want to bank all our interventions on vaccines,” he said. “Vaccines are only one tool that can be used to protect children and communities against mpox. And we are, in addition to vaccines, deploying other different tools” to keep children safe, he said.

UNICEF says it is possible to halt the rapid spread of mpox if agencies act swiftly and have the means in which to do it. The U.N. children’s agency is urgently appealing for $58.8 million to scale up its humanitarian response across six African countries, including Burundi.

“These funds are essential to stop the transmission of mpox, protect children and maintain critical services like education and health care,” said Ngwakum.

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New analysis of 2019 Wuhan market animals may help find COVID-19 origin

LONDON — Scientists searching for the origins of COVID-19 have zeroed in on a short list of animals that possibly helped spread it to people, an effort they hope could allow them to trace the outbreak back to its source.

Researchers analyzed genetic material gathered from the Chinese market where the first outbreak was detected and found that the most likely animals were raccoon dogs, civet cats and bamboo rats. The scientists suspect infected animals were first brought to the Wuhan market in late November 2019, which then triggered the pandemic.

Michael Worobey, one of the new study’s authors, said they found which sub-populations of animals might have transmitted the coronavirus to humans. That may help researchers pinpoint where the virus commonly circulates in animals, known as its natural reservoir.

“For example, with the raccoon dogs, we can show that the raccoon dogs that were [at the market] … were from a sub-species that circulates more in southern parts of China,” said Worobey, an evolutionary biologist at the University of Arizona. Knowing that might help researchers understand where those animals came from and where they were sold. Scientists might then start sampling bats in the area, which are known to be the natural reservoirs of related coronaviruses like SARS.

While the research bolsters the case that COVID-19 emerged from animals, it does not resolve the polarized and political debate over whether the virus instead emerged from a research lab in China.

Mark Woolhouse, a professor of infectious diseases at the University of Edinburgh, said the new genetic analysis suggested that the pandemic “had its evolutionary roots in the market” and that it was very unlikely COVID-19 was infecting people before it was identified at the Huanan market.

“It’s a significant finding and this does shift the dial more in favor of an animal origin,” said Woolhouse, who was not connected to the research. “But it is not conclusive.”

An expert group led by the World Health Organization concluded in 2021 that the virus probably spread to humans from animals and that a lab leak was “extremely unlikely.” WHO chief Tedros Adhanom Ghebreyesus later said it was premature to rule out a lab leak.

An AP investigation in April found the search for the COVID origins in China has gone dark after political infighting and missed opportunities by local and global health officials to narrow the possibilities.

Scientists say they may never know for sure where exactly the virus came from.

In the new study, published Thursday in the journal Cell, scientists from Europe, the U.S. and Australia analyzed data previously released by experts at the Chinese Center for Disease Control and Prevention. It included 800 samples of genetic material Chinese workers collected on Jan. 1, 2020, from the Huanan seafood market, the day after Wuhan municipal authorities first raised the alarm about an unknown respiratory virus.

Chinese scientists published the genetic sequences they found last year, but did not identify any of the animals possibly infected with the coronavirus. In the new analysis, researchers used a technique that can identify specific organisms from any mixture of genetic material collected in the environment.

Worobey said the information provides “a snapshot of what was [at the market] before the pandemic began” and that genetic analyses like theirs “helps to fill in the blanks of how the virus might have first started spreading.”

Woolhouse said the new study, while significant, left some critical issues unanswered.

“There is no question COVID was circulating at that market, which was full of animals,” he said. “The question that still remains is how it got there in the first place.”

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Debate churns over mining Pacific seabed for green-energy minerals

People from across the globe are convening on the sidelines of the U.N. General Assembly in New York City for Climate Week. On the agenda: the environmental impact of seabed mining. The discussion comes as tech companies seek ways to fuel the green revolution while minimizing environmental impacts. VOA’s Jessica Stone has more.]

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Baby hippo Moo Deng becomes internet sensation

CHONBURI, Thailand — Only a month after Thailand’s adorable baby hippo Moo Deng was unveiled on Facebook, her fame became unstoppable both domestically and internationally.

Zookeeper Atthapon Nundee has been posting cute moments of the animals in his care for about five years. He never imagined Khao Kheow Open Zoo’s newborn pygmy hippo would become an internet megastar within weeks.

Cars started lining up outside the zoo well before it opened Thursday. Visitors traveled from near and far for a chance to see the pudgy, expressive 2-month-old in person at the zoo about 100 kilometers southeast of Bangkok. The pit where Moo Deng lives with her mom, Jona, was packed almost immediately, with people cooing and cheering every time the pink-cheeked baby animal made skittish movements.

“It was beyond expectation,” Atthapon told The Associated Press. “I wanted people to know her. I wanted a lot of people to visit her, or watch her online, or leave fun comments. I never would’ve thought (of this).”

Moo Deng, which literally means “bouncy pork” in Thai, is a type of meatball. The name was chosen by fans via a poll on social media, and it matches her other siblings: Moo Toon (stewed pork) and Moo Waan (sweet pork). There is also a common hippo at the zoo named Kha Moo (stewed pork leg).

“She’s such a little lump. I want to ball her up and swallow her whole!” said Moo Deng fan Areeya Sripanya while visiting the zoo Thursday.

Already, Moo Deng has been made into memes. Artists are drawing cartoons based on her. Social media platform X even featured her in its official account’s post.

With all that fame, zoo director Narongwit Chodchoi said they have begun patenting and trademarking “Moo Deng the hippo” to prevent the animal from being commercialized by anyone else. “After we do this, we will have more income to support activities that will make the animals’ lives better,” he said.

“The benefits we get will return to the zoo to improve the life of all animals here.”

The zoo sits on 800 hectares of land and is home to more than 2,000 animals. It runs breeder programs for many endangered species like Moo Deng’s. The pygmy hippopotamus that’s native to West Africa is threatened by poaching and loss of habitat. There are only 2,000-3,000 of them left in the wild.

To help fund the initiative, the zoo is making Moo Deng shirts and pants that will be ready for sale at the end of the month, with more merchandise to come.

Narongwit believes a factor of Moo Deng’s fame is her name, which compliments her energetic and chaotic personality captured in Atthapon’s creative captions and video clips.

Appropriately, Moo Deng likes to “deng,” or bounce, and Atthapon got a lot of cute and funny moments of her giddy bouncing on social media. Even when she’s not bouncing, the hippo is endlessly cute — squirming as Atthapon tries to wash her, biting him while he was trying to play with her, calmly closing her eyes as he rubs her pinkish cheeks or her chubby belly.

Atthapon, who has worked at the zoo for eight years taking care of hippos, sloths, capybaras and binturongs, said baby hippos are usually more playful and energetic, and they become calmer as they get older.

The zoo saw a spike in visitors since Moo Deng’s fame — so much that the zoo now has to limit public access to the baby’s enclosure to five-minute windows throughout the day during weekends.

Narongwit said the zoo has been receiving over 4,000 visitors during a weekday, up from around just 800 people, and more than 10,000 during a weekend, up from around 3,000 people.

But the fame has also brought some hostile visitors to Moo Deng, who only wakes up ready to play about two hours a day. Some videos showed visitors splashing water or throwing things at the sleeping Moo Deng to try to wake her up. The hippo pit now has a warning sign against throwing things at Moo Deng — posted prominently at the front in Thai, English and Chinese.

Narongwit said the zoo would take action under the animal protection law if people mistreat the animal. But clips emerged of people treating Moo Deng poorly, and the backlash was fierce. The zoo director said that since then, they haven’t seen anyone doing it again.

For fans who can’t make the journey or are discouraged after seeing the crowds for Moo Deng, the Khao Kheow Open Zoo set up cameras and plan to start a 24-hour live feed of the baby hippo in the coming week. 

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Africa needs its own medical research for its health issues, experts say

Addis Ababa, Ethiopia — One of the hurdles to improving health care systems for African countries is the shortage of scientists and lack of meaningful medical research on the continent, experts say.

An organization hopes to change that by enabling researchers and policymakers in three large African countries to develop more extensive and relevant research.

According to a 2017 report by the World Economic Forum, Africa is home to 15% of the world’s population and 25% of the world’s disease burden — but produces just 2% of the world’s medical research.

The report said of the medical research that does occur, much of it fails to prioritize diseases or health problems most pressing for Africans.

A group of African health researchers and institutions are now pushing for the continent’s medical research to be more focused on the continent’s own medical problems.

The African Population and Health Research Center is bringing together scientists, academics, policymakers and government officials from Ethiopia, Kenya and Nigeria.

Their goal is to strengthen African leadership in research and development, ensuring that the findings from these researchers are relevant and accessible to decision-makers, leading to better health care systems across the continent.

Catherine Kyobutungi, head of the organization, said African-led research can help solve health problems on the continent much more easily and quickly.

“If we want the research to be done by Africans in Africa on African issues, that is [how] the priorities for what research should be done are defined, not just by academics, but by the people who are going to use that research for decision-making,” she said.

“What we are trying to achieve is to shift what research is and what it is for and to create an army of African scientists that do research to solve African problems in real time, not after 50 years,” Kyobutungi said.

Dr. Hadiza Galadanci, a professor of obstetrics and gynecology at Bayero University in Nigeria, said her country accounts for about 28% of maternal deaths worldwide each year.

She and researchers from four African countries, Birmingham University in the United Kingdom and the World Health Organization published research on the best way to save women who were dying from postpartum hemorrhage, or excessive bleeding after childbirth. Their innovation — a calibrated obstetric drape, which is placed beneath a birthing mother — allows physicians to collect and precisely measure blood and fluid loss.

“The drape is just put under … the woman when she’s going to deliver. And then, as soon as she delivers, any blood that comes out goes to the drape. So, we have an objective assessment,” Galadanci explained, saying that the process allows for more specific treatment.

“When we did this, we found out that we could reduce the rate of severe [postpartum hemorrhage] leading to maternal death by 60%.”

African researchers face challenges ranging from a lack of reliable data and funding to poor infrastructure to cultural and religious issues.

With the support of the Bill and Melinda Gates Foundation, Africa Research Connect was developed to connect and enhance the visibility of scientists, institutions, policymakers and donors.

Jude Igumbor, an associate professor at Wits School of Public Health in South Africa, wants to improve the visibility of African scientists and their work.

“What we give African scientists is they are able to find each other for collaboration,” he said.

The African Population and Health Research Center is calling on donors to fund African institutions and researchers directly instead of going through other organizations, saying that doing so helps the money create opportunities and hone the skills of researchers on the continent.

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Climate week talks to include critical minerals and seabed mining debate

Washington — When activists, policymakers and representatives from across the globe gather next week in New York to participate in climate week, one pressing issue on the agenda that is less frequently discussed and known will be the environmental impact of seabed mining.

As countries look for ways to lower emissions, critical minerals are playing a key role in that transition. Critical minerals are used in all kinds of green technologies, from solar panels and wind turbines to batteries in electric vehicles. And one place where those mineral resources are abundant is deep under the sea.

The debate over accessing seabed resources is heated. Supporters say the technology exists to safely access these critical minerals undersea, but environmentalists and activists say the potential of undiscovered biodiversity on the seafloor is too important to endanger.

During climate week, which will take place on the sidelines of U.N. General Assembly meetings, organizers are expected to host a roundtable on the environmental impact of seabed mining and other discussions about critical minerals.

The World Economic Forum says that if the globe wants to reach net-zero emissions by 2050, two-thirds of vehicles must be powered by electric batteries. And the International Energy Agency says that to reach that goal, the world needs six times more mineral resources by 2040 than it has today.

Some of the largest mineral deposits are found on the ocean floor in the form of polymetallic nodules, or rocks.

Ocean of resources

According to the International Seabed Authority, or ISA, there are 21 billion tons of polymetallic nodules strewn across the seabed of the Clarion-Clipperton Zone, or CCZ. Each nodule contains a combination of electric vehicle battery components such as nickel, manganese, copper and cobalt. The ISA plans to release regulations for mining in the international waters of the CCZ by 2025.

The ISA has already awarded 17 exploration contracts for polymetallic nodules in the Clarion-Clipperton Zone – a large swath of the Pacific Ocean the size of the continental United States which sits between Hawaii and Mexico. Three of those exploration contracts went to The Metals Company, a Canadian deep-sea mining company.

The Pacific Island Nations of Nauru, Kiribati and Tonga have sponsored The Metals Company’s efforts to develop a portion of the seabed. In an interview with VOA, CEO Gerard Barron said the company is ready to begin as soon as the ISA allows mining.

“Our collector methodology is to put a robot on the seafloor which crawls around the ocean floor and fires a jet of water at the nodule and it creates an inverse pressure and lifts the nodule up, and so we don’t go down and scour the seafloor,” said Barron via Zoom, adding that TMC has spent the past decade focused on testing this equipment and collecting data on its environmental impact as part of its permit application to the ISA.

Moratorium needed

Critics worry scooping up these mineral-rich rocks will disrupt important biodiversity – much of it still unnamed and some of it undiscovered. Researchers have found that 90% of the more than 5,000 species in the zone are new to science. Eddie Palu, president of the Tonga Fishery Association, wants a pause for more research.

“We demand a moratorium on the seabed mining until the environmental, economic and social risk are comprehensively understood,” he said during a panel discussion at the recent Pacific Islands Forum in Tonga.

Shiva Gounden from Greenpeace Australia Pacific, who also sat on the panel, agreed.

“We know only very little of the deep sea, and the race for the final frontier could cause irreversible damages to the people and to the communities of our Pacific,” Gounden said.

But scientists say no light and very little oxygen reaches the deep sea – limiting the life there to mostly bacteria and small invertebrates.

The Metals Company’s Barron said combating climate change is a bigger threat to the planet than undersea mining, adding that the company’s environmental impact studies show that “we can safely collect these nodules” and turn them into battery metals without having “a negative impact on the ocean.”

“The notion that we can do any extraction with zero impact is a dream,” added Barron. “The oceans are impacted by every single thing we do today, especially global warming. So, we need to address the main driver for climate change and reduce emissions.”

Fueling innovation

Still, the quest to do just that – access minerals on the seabed with minimal impact to the environment – has created competition between technology companies.

U.S. tech startup Impossible Metals is testing a robot which can avoid nodules where it detects life and harvests those where it does not.

“The vehicle hovers above the seabed, uses the camera and it actually picks up the nodules one by one. So this really minimizes all of the negative concerns around big sediment plumes,” CEO Oliver Gunasekra told VOA in an interview.

Gunaskera’s company spun off Viridian Biometals. Its technology bypasses energy-intensive processes such as smelting with bacteria which can separate metal ore from the rock around it. The process creates no emissions or waste.

“The bacteria need oxygen just like we do to breathe. And when there’s not enough oxygen in the water around them, the bacteria have learned that there’s oxygen in the rocks, and they have adapted to breathe that oxygen,” said Viridian CEO Eric Macris.

Impossible Metals and Viridian Biometals say they are two to three years out from commercializing their technology, depending on funding. TMC says it could be ready to begin its collection operations as soon as international regulations are released next year.

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South African study transforms global TB treatment

Tuberculosis remains a critical public health issue in many countries and is a leading cause of death in South Africa. Over the past six years, the BEAT Tuberculosis study, conducted in South Africa and focused on children and pregnant women, has revealed a promising new oral treatment that could mark a significant breakthrough in the fight against drug-resistant TB. Zaheer Cassim reports.

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Partial lunar eclipse will be visible during September’s supermoon

new york — Get ready for a partial lunar eclipse and supermoon, all rolled into one. 

The spectacle will be visible in clear skies across North America and South America Tuesday night and in Africa and Europe Wednesday morning. 

A partial lunar eclipse happens when the Earth passes between the sun and moon, casting a shadow that darkens a sliver of the moon and appears to take a bite out of it. 

Since the moon will inch closer to Earth than usual, it’ll appear a bit larger in the sky. The supermoon is one of three remaining this year. 

“A little bit of the sun’s light is being blocked so the moon will be slightly dimmer,” said Valerie Rapson, an astronomer at the State University of New York at Oneonta. 

The Earth, moon and sun line up to produce a solar or lunar eclipse anywhere from four to seven times a year, according to NASA. This lunar eclipse is the second and final of the year after a slight darkening in March. 

In April, a total solar eclipse plunged select cities into darkness across North America. 

No special eye protection is needed to view a lunar eclipse. Viewers can stare at the moon with the naked eye or opt for binoculars and telescopes to get a closer look. 

To spot the moon’s subtle shrinkage over time, hang outside for a few hours or take multiple peeks over the course of the evening, said KaChun Yu, curator at the Denver Museum of Nature and Science. 

“From one minute to the next, you might not see much happening,” said Yu. 

For a more striking lunar sight, skywatchers can set their calendars for March 13. The moon will be totally eclipsed by the Earth’s shadow and will be painted red by stray bits of sunlight filtering through Earth’s atmosphere. 

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Zimbabwe starts providing free treatment for women with obstetric fistula

Chinhoyi, Zimbabwe — Zimbabwe’s government has given in to pressure from rights groups and is now providing free treatment to women with obstetric fistula, a condition that makes it hard for mothers who went through difficult labor to control their bowels. For a closer look, VOA visited Chinhoyi, a farming and mining area about 150 kilometers west of Harare, where early marriages are common, and where the treatment is being offered.

Among the first beneficiaries of the treatment were young women at Chinhoyi Provincial Hospital after government gynecologists had performed surgery to address their cases of obstetric fistula. Twenty-three-year old Chiedza, not her real name as she requested that VOA protect her identity, was visibly happy as she had not been able to control her bowels since giving birth to her son seven years ago.

“When I gave birth I tore my private parts, so I couldn’t hold my feces,” she said. “It would just come out on its own. I would just feel something on my body flowing. I stayed like that because I did not have money to seek services of gynecologists to correct my condition. So, when I heard about this free service on a WhatsApp group for women, I called a toll-free number which was there and I came here. So I am now going to live a comfortable life. I can now perform even house chores comfortably.”

Another woman who asked to be called Tendai ruptured her bladder after protracted labor at home while giving birth at the age of 16.

“I would share nappies with my baby so as to block my smell from others,” she said. “At one time I almost committed suicide because people kept on laughing at my condition. I thought I had been bewitched till I came here and saw that there are some people in my condition. I am grateful for this procedure for it has given me hope.”

The World Health Organization estimates that between 50,000 and 100,000 women experience obstetric fistula every year and that about 2 million women in sub-Saharan Africa are living with the condition.  

Dr. Stanley Ngwaru, a senior gynecologist in Zimbabwe’s ministry of health, says the condition is an abnormal communication between the woman’s genital tract and the urinary tract or the rectum.

“They suffer shame and they suffer social segregation,” he said. “It’s very common in young women, because the genital tract is not well developed and when they go into labor, they are more likely to suffer from obstruction and this can lead to these communications are developing between the genital tract and the unit tract and the rectum.”

Lucia Masuka, head of Amnesty International in Zimbabwe, says she commends the government for offering the free service. However, she believes authorities needs to develop a strategy to help prevent this condition from afflicting young women in the first place.

“If we therefore facilitate access to sexual reproductive health services for this group, it will reduce instances of early pregnancies, and in turn, reduce cases of obstetrics fistula,” she said. “Whilst treatment is a positive development, it’s akin to trying to mop water from an open tap; you will never really be able to mop that water as long as the tap is open.”

Amnesty International in Zimbabwe last year pleaded with parliament to push the government to make obstetric fistula treatment a national issue after its research had revealed that the condition was rampant among young women in Zimbabwe and was not getting enough attention.

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COP29 leaders unveil climate funding and energy storage goals

LONDON — Less than two months ahead of the COP29 United Nations Climate Summit, the Azerbaijani leadership laid out its plans on Tuesday for what it hoped to achieve, as countries continue to wrestle with how to raise ambitions for a new financing target.

The main task for the November summit is for countries to agree on a new annual target for funding that wealthy countries will pay to help poorer nations cope with climate change. Many developing countries say they cannot upgrade their targets to cut emissions faster without first receiving more financial support to invest in doing this.

With countries remaining far from agreement on the financing goal, the COP29 presidency this week outlined more than a dozen side initiatives that could raise ambitions, but do not require party negotiation and building consensus which can hamper progress. These take the form of new funds, pledges, and declarations that national governments can adopt.

Notably, this includes a fund with voluntary contributions from fossil fuel producing countries and companies for the public and private sectors working on climate issues, as well as grants that can be doled out to assist with climate-fueled natural disasters in developing countries.

Such side agendas use “the convening power of COP and the hosts’ respective national capabilities to form coalitions and drive progress,” said Mukhtar Babayev, who holds the rotating COP presidency, in a letter to all parties and stakeholders.

Over 120 countries pledged at last year’s COP28 summit in Dubai, for example, to triple renewable energy capacity by 2030.

The COP29 presidency also hopes to build support around a pledge to increase global energy storage capacity six times above 2022 levels, reaching 1,500 gigawatts by 2030. This would include a commitment to scale up investments in energy grids, adding or refurbishing more than 80 million km by 2040.

Babayev, who is Azerbaijan’s minister of ecology and natural resources, said the agenda would “help to enhance ambition by bringing stakeholders together around common principles and goals.”

“We hope to address some of the most pressing issues while also highlighting remaining priorities,” he said.

Another declaration would see countries and companies create a global market for clean hydrogen, addressing regulatory, technological, financing and standardization barriers.

COP29 leaders have also appealed for a “COP Truce” that would highlight the importance of peace and climate action.

Despite countries’ existing climate commitments, carbon dioxide emissions from burning fossil fuels hit a record high last year, and the world just registered its hottest summer on record as temperatures climb.

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Climate change will escalate child health crisis due to malnutrition, says Gates

LONDON — Malnutrition is the world’s worst child health crisis and climate change will only make things more severe, according to Microsoft-co-founder turned philanthropist Bill Gates.

Between now and 2050, 40 million more children will have stunted growth and 28 million more will suffer from wasting, the most extreme and irreversible forms of malnutrition, as a result of climate change, the Bill & Melinda Gates Foundation said in a report on Tuesday.

“Unless you get the right food, broadly, both in utero and in your early years, you can never catch up,” Gates told Reuters in an online interview last week, referring to a child’s physical and mental capacity, both of which are held back by a lack of good nutrition. Children without enough of the right food are also more vulnerable to diseases like measles and malaria, and early death.

“Around 90% of the negative effect of climate change works through the food system. Where you have years where your crops basically fail because of drought or too much rain,” he said.

Gates was speaking ahead of the publication of the Bill and Melinda Gates Foundation’s annual Goalkeepers report, which tracks progress on the United Nations Sustainable Development Goals (SDGs), around reducing poverty and improving health. The report includes the projections above.

In 2023, the World Health Organization estimated that 148 million children experienced stunting and 45 million experienced wasting.

Gates called for more funding for nutrition, particularly through a new platform led by UNICEF aiming to co-ordinate donor financing, the Child Nutrition Fund, as well as more research. But he said the money should not be taken away from other proven initiatives, like routine childhood vaccinations, for this purpose.

“(Nutrition) was under-researched … it’s eye-opening how important this is,” he added, saying initiatives like food fortification or improving access to prenatal multi-vitamins could be as effective as some vaccines in improving child health in the world’s poorest countries.

The Gates Foundation said in January it plans to spend more on global health this year than ever before – $6.8 billion – as wider funding efforts stall.

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Authorities install air quality Monitors around Nairobi

Authorities in Nairobi are trying to tackle the Kenyan capital’s chronic and worsening air pollution. With help from the U.S. Agency for International Development, authorities are placing sensors that can monitor air quality around the densely populated city. Victoria Amunga reports from Nairobi. Camera: Jimmy Makhulo

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Tech billionaire returns to Earth after first private spacewalk

CAPE CANAVERAL, Florida — A billionaire spacewalker returned to Earth with his crew on Sunday, ending a five-day trip that lifted them higher than anyone has traveled since NASA’s moonwalkers.

SpaceX’s capsule splashed down in the Gulf of Mexico near Florida’s Dry Tortugas in the predawn darkness, carrying tech entrepreneur Jared Isaacman, two SpaceX engineers and a former Air Force Thunderbird pilot.

They pulled off the first private spacewalk while orbiting nearly 740 kilometers above Earth, higher than the International Space Station and Hubble Space Telescope. Their spacecraft hit a peak altitude of 1,408 kilometers following Tuesday’s liftoff.

Isaacman became only the 264th person to perform a spacewalk since the former Soviet Union scored the first in 1965, and SpaceX’s Sarah Gillis the 265th. Until now, all spacewalks were done by professional astronauts.

“We are mission complete,” Isaacman radioed as the capsule bobbed in the water, awaiting the recovery team. Within an hour, all four were out of their spacecraft, pumping their fists with joy as they emerged onto the ship’s deck.

It was the first time SpaceX aimed for a splashdown near the Dry Tortugas, a cluster of islands 113 kilometers west of Key West. To celebrate the new location, SpaceX employees brought a big, green turtle balloon to Mission Control at company headquarters in Hawthorne, California. The company usually targets closer to the Florida coast, but two weeks of poor weather forecasts prompted SpaceX to look elsewhere.

During Thursday’s commercial spacewalk, the Dragon capsule’s hatch was open barely a half-hour. Isaacman emerged only up to his waist to briefly test SpaceX’s brand-new spacesuit followed by Gillis, who was knee-high as she flexed her arms and legs for several minutes. Gillis, a classically trained violinist, also held a performance in orbit earlier in the week.

The spacewalk lasted less than two hours, considerably shorter than those at the International Space Station. Most of that time was needed to depressurize the entire capsule and then restore the cabin air. Even SpaceX’s Anna Menon and Scott “Kidd” Poteet, who remained strapped in, wore spacesuits.

SpaceX considers the brief exercise a starting point to test spacesuit technology for future, longer missions to Mars.

This was Isaacman’s second chartered flight with SpaceX, with two more still ahead under his personally financed space exploration program named Polaris after the North Star. He paid an undisclosed sum for his first spaceflight in 2021, taking along contest winners and a pediatric cancer survivor while raising more than $250 million for St. Jude Children’s Research Hospital.

For the just completed so-called Polaris Dawn mission, the founder and CEO of the Shift4 credit card-processing company shared the cost with SpaceX. Isaacman won’t divulge how much he spent. 

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