Category: Science

The replacement crew for the International Space Station was launched late Friday, paving the way for the return home of Butch Wilmore and Suni Williams, two NASA astronauts stuck on the space station for nine months.
The SpaceX Falcon 9 rocket lifted off at 7:03 p.m. from NASA’s Kennedy Space Center in Florida carrying Crew-10 members: NASA’s Anne McClain and Nichole Ayers, Japan’s Takuya Onishi and Russia’s Kirill Peskov. The crew is part of a routine six-month rotation.
Crew-10 and the Dragon spacecraft are expected to reach the space station around 11:30 p.m. Saturday.
Returning to Earth alongside Wilmore and Williams will be NASA astronaut Nick Hague and Russian cosmonaut Aleksandr Gorbunov. Their return is scheduled for Wednesday, to allow for an overlap of the two crews to brief the new team.
Wilmore and Williams arrived aboard the International Space Station in June 2024 and expected to stay in space for about 10 days. But their return was delayed after mechanical issues with their spacecraft, which, after weeks of troubleshooting was subsequently sent back to Earth without them. Their return was continually pushed back due to other technical delays.
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A Friday report by the United Nations says Iran is using advanced technology, including drones, facial recognition and a citizen-reporting app to crack down on violations of its mandatory hijab laws.
A key element of the effort is the government-backed Nazer app, which enables the police and “vetted” members of the public to report alleged violations by women in vehicles, including those in ambulances, mass transit and taxis.
The report describes the app as allowing users to upload the vehicle license plate, location and time of an alleged violation. It then, according to the report, alerts police. Then, according to the report, the app “triggers a text message (in real-time) to the registered owner of the vehicle, warning them that they had been found in violation of the mandatory hijab laws, and that their vehicles would be impounded for ignoring these warnings.”
According to the report, authorities are using drones in Tehran and the southern part of the country to monitor hijab compliance in public areas, as well as new facial recognition software said to have been installed last year at the entrance of Tehran’s Amirkabir University.
The report is to go to the U.N. Human Rights Council on Tuesday.
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March 14 is Pi Day, an annual celebration of the mathematical constant of pi, representing the ratio of a circle’s circumference to its diameter.
The holiday is observed on March 14 or 3/14 because 3.14 are the first three digits of the infinite number pi — 3.14159 … and on and on.
The celebration of Pi Day was the brainchild of physicist Larry Shaw and was first observed in 1988 at San Francisco’s Exploratorium, a science museum, and has since grown into an international event.
At that first simple salute to pi in 1988, Shaw and his wife, Catherine, took — guess what? — pies — and tea to the museum for the celebration of the infinite number. Shaw became known as the Prince of Pi and reigned over the museum’s annual honoring of the never-ending number for years, until his death in 2017.
Pi Day festivities grew to include the honoring of mathematical genius Albert Einstein because he was born on March 14.
The U.S. House of Representatives officially designated March 14 as National Pi Day in 2009.
The Exploratorium posted on its website that this year’s observance of pi would include the annual Pi Procession, which the museum described as being executed by “a high spirited crowd” through the museum and would circle the museum’s Pi Shrine 3.14 times, while “waving the digits of pi and dancing along” to a brass band.
And, of course, all participants in the revelry would be rewarded with a free slice of pie.
Pi Day is now celebrated around the world by pi lovers and is viewed as a way to arouse interest in the sciences among young people.
Pi lovers had a special treat in 2015, History.com reports. That year Pi Day was celebrated on 3/14/15 at 9:26:53 a.m. The combined numbers of the date and time represent the first 10 digits of pi — 3.141592653.
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JOHANNESBURG, SOUTH AFRICA — Researchers warn that type 2 diabetes could affect millions more people in the coming decades after a study published this month revealed the disease is rising far faster among people in sub-Saharan Africa than previously thought.
Take 51-year-old security guard Sibusiso Sithole, for example. Being diagnosed with type 2 diabetes came as a shock, he said, because he walked six miles to and from work every day and never thought his weight was a problem.
Then his wife noticed changes in his health.
Since his diagnosis 13 years ago, Sithole has been on a rigorous treatment for diabetes and high blood pressure.
“I have to take six … medications every day,” he said.
Diabetes is a condition in which the body struggles to turn food into energy due to insufficient insulin. Without insulin, sugar stays in the blood instead of entering cells, leading to high blood-sugar levels. Long-term complications include heart disease, kidney failure, blindness and amputations.
The International Diabetes Federation estimated in 2021 that 24 million adults in sub-Saharan Africa were living with the condition. Researchers had projected that by 2045, about 6% of sub-Saharan Africans — over 50 million — would have diabetes.
The new study, published this month in the medical journal The Lancet, suggested the actual percentage could be nearly double that.
By tracking more than 10,000 participants in South Africa, Kenya, Ghana and Burkina Faso over seven years, researchers found that poor eating habits, lack of health care access, obesity and physical inactivity are key drivers of diabetes in Africa.
Dr. Raylton Chikwati, a study co-author from the University of Witwatersrand in South Africa, said another risk factor is living in or moving to the outskirts of cities, or “peri-urban areas.”
“Access to health care, you know, in the rural areas is a bit less than in the urban areas,” Chikwati said, adding that increased use of processed foods in the peri-urban areas was a problem.
Palwende Boua, a research associate at the Clinical Research Unit of Nanoro in Burkina Faso, said long-term studies are rare in Africa but essential to understanding diseases.
“Being able to have a repeated measure and following up [with] the same people … is providing much more information and much valuable information,” Boua said, “rather than having to see people once and trying to understand a phenomenon.”
Boua is preparing a policy brief for Burkina Faso’s government to assist in the fight against diabetes.
For Sithole, managing his diabetes has been a long journey. But with treatment and lifestyle changes, he has regained control over his health.
“What I can tell people is that they must go and check — check the way they eat — because that time I was having too much weight in my body,” he said. “I was wearing size 40 that time. Now I’m wearing size 34.”
Experts stressed that Africans should get their blood-sugar level tested and seek treatment when diabetes is diagnosed.
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The U.S. bird population is declining at an alarming rate, according to a report published Thursday by an alliance of science and conservation groups.
Habitat loss and climate change are among the key contributing factors to the bird population losses, according to the 2025 U.S. State of the Birds report.
More than 100 of the species studied, have reached a “tipping point,” losing more than half their populations in the last 50 years. The report revealed that the avian population in all habitats is declining, including the duck population, previously considered a triumph of conservation. “The only bright spot is water birds such as herons and egrets that show some increases,” Michael Parr, president of the American Bird Conservancy, told Reuters.
The decline in the duck population fell by approximately 30% from 2017, but duck population numbers still remain higher, however, than their 1970 numbers, according to an Associated Press account on the report.
“Roughly one in three bird species (229 species) in the U.S. requires urgent conservation attention, and these species represent the major habitats and systems in the U.S. and include species that we’ve long considered to be common and abundant,” Amanda Rodewald, faculty director of the Cornell Lab of Ornithology’s Center for Avian Population Studies told Reuters.
Included among the birds with highest losses, Reuters reported, are the mottled duck, Allen’s hummingbird, yellow-billed loon, red-faced cormorant, greater sage-grouse, Florida scrub jay, Baird’s sparrow, saltmarsh sparrow, mountain plover, Hawaiian petrel, Bicknell’s thrush, Cassia crossbill, pink-footed shearwater, tricolored blackbird and golden-cheeked warbler. Some of the birds in this “red alert” group are already protected under the U.S. Endangered Species Act, the news agency said.
“For each species that we’re in danger of losing, it’s like pulling an individual thread out of the complex tapestry of life,” Georgetown University biologist Peter Marra. who was not involved in the new report, told AP. While the outlook may seem dire, it is not without hope, said Marra, who noted the resurgence of the majestic bald eagle.
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PARIS — On the way to investigate the scene of a historic asteroid collision, a European spacecraft swung by Mars and captured rare images of the red planet’s mysterious small moon Deimos, the European Space Agency said Thursday.
Europe’s HERA mission is aiming to find out how much of an impact a NASA spacecraft made when it deliberately smashed into an asteroid in 2022 in the first test of our planetary defenses.
But HERA will not reach the asteroid — which is 11 million kilometers from Earth in the asteroid belt between Mars and Jupiter — until late 2026.
On the long voyage there, the spacecraft swung around Mars on Wednesday.
The spacecraft used the planet’s gravity to get a “kick” that also changed its direction and saved fuel, mission analyst Pablo Munoz told a press conference.
For an hour, HERA flew as close as 5,600 kilometers from the Martian surface, at a speed of 33,480 kilometers an hour.
It used the opportunity to test some of its scientific instruments, snapping around 600 pictures, including rare ones of Deimos.
The lumpy, 12.5-kilometer-wide moon is the smaller and less well-known of the two moons of Mars.
Exactly how Deimos and the bigger Phobos were formed remains a matter of debate.
Some scientists believe they were once asteroids that were captured in the gravity of Mars, while others think they could have been shot from a massive impact on the surface.
The new images add “another piece of the puzzle” to efforts to determine their origin, Marcel Popescu of the Astronomical Institute of the Romanian Academy said.
There are hopes that data from HERA’s “HyperScout” and thermal infrared imagers — which observe colors beyond the limits of the human eye — will shed light on this mystery by discovering more about the moon’s composition.
Those infrared imagers are why the red planet appears blue in some of the photos.
Next, HERA will turn its focus back to the asteroid Dimorphos.
When NASA’s DART mission smashed into Dimorphos in 2022, it shortened the 160-meter-wide asteroid’s orbit around its big brother Didymos by 33 minutes.
Although Dimorphos itself posed no threat to Earth, HERA intends to discover whether this technique could be an effective way for Earth to defend itself against possibly existence-threatening asteroids in the future.
Space agencies have working to ramp up Earth’s planetary defenses, monitoring for potential threats so they can be dealt with as soon as possible.
Earlier this year, a newly discovered asteroid capable of destroying a city was briefly given a more than 3% chance of hitting Earth in 2032.
However further observations sent the chances of a direct hit back down to nearly zero.
Richard Moissl, head of the ESA’s planetary defense office, said that asteroid, 2024 YR, followed a pattern that will become more common.
As we get better at scanning the skies, “we will discover asteroids at a higher rate,” he said.
The ESA is developing a second planetary defense mission to observe the 350-metre-wide asteroid Apophis, which will fly just 32,000 kilometers from Earth on April 13, 2029.
If approved by the ESA’s ministerial council, the Ramses mission will launch in 2028, reaching the asteroid two months before it approaches Earth.
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BRUSSELS — Belgian federal prosecutors announced Thursday the arrests of several people as part of a corruption probe linked to the European Parliament amid reports in local media that Chinese company Huawei bribed EU lawmakers.
The arrests came as an investigation by Le Soir newspaper and other media said lobbyists working for the Chinese telecoms giant are suspected of bribing current or former European Parliament members to promote the company’s commercial policy in Europe.
About 100 federal police officers carried out 21 searches in Brussels, the Flanders and Wallonia regions, and Portugal, the federal prosecutor’s office said.
The suspects would be questioned over “alleged involvement in active corruption within the European Parliament, as well as for forgery and use of forgeries,” prosecutors said. “The offenses were allegedly committed by a criminal organization.”
Huawei public relations representatives in London did not respond to an emailed request for comment and could not be reached by phone.
The European Parliament said only that the assembly “takes note of the information” and “always cooperates fully with the judicial authorities.”
Huawei, which makes cellphones and is the biggest maker of networking gear for phone and internet carriers, has been caught in tensions between the United States and China over technology and trade.
Some European nations have followed Washington’s lead and banned Huawei’s equipment from next-generation mobile networks over allegations that it poses a security risk that could help facilitate Chinese spying. The company has repeatedly denied this.
European Commission spokesperson Thomas Regnier said the EU’s executive branch had no comment regarding the investigation, but underlined security concerns the commission has about Huawei and Europe’s fifth-generation mobile phone networks.
“The security of our 5G networks is obviously crucial for our economy,” Regnier told reporters. “Huawei represents materially higher risks than other 5G suppliers.”
EU member states should swiftly “adopt decisions to restrict or to exclude Huawei from their 5G networks,” Regnier said. “A lack of swift action would expose the EU as a whole to a clear risk.”
The federal prosecutor’s office, which did not name Huawei, said it believes there was corruption “from 2021 to the present day” in various forms, “such as remuneration for taking political positions or excessive gifts such as food and travel expenses or regular invitations to football matches.”
Prosecutors say payments might have been disguised as business expenses and in some cases may have been directed to third parties. They would also look to “detect any evidence of money laundering.”
Police seized several documents and objects during the searches. Staff at Huawei’s offices in Brussels declined to comment and turned the lights off inside to avoid photographs taken through the window.
According to Follow The Money, an investigative journalism platform, one of the main suspects in the probe is 41-year-old Valerio Ottati, a Belgian Italian lobbyist who joined Huawei in 2019.
Before becoming Huawei’s EU public affairs director, Ottati was an assistant to two Italian MEPs who were both members of a European Parliament group dealing with China policy, Follow the Money reported.
This is the second corruption case targeting the EU Parliament in less than three years. In December 2022, the legislature was shaken by a corruption scandal in which Qatari officials were accused of bribing EU officials to play down labor rights concerns ahead of the soccer World Cup.
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SAN FRANCISCO — Social media giant Meta on Thursday announced it would begin testing its new “Community Notes” feature across its platforms on March 18, as it shifts away from third-party fact-checking toward a crowd-sourced approach to content moderation.
Meta’s chief executive Mark Zuckerberg announced the new system in January as he appeared to align himself with the incoming Trump administration, including naming a Republican as the company’s head of public policy.
The change of system came after years of criticism from supporters of U.S. President Donald Trump, among others, that conservative voices were being censored or stifled under the guise of fighting misinformation, a claim professional fact-checkers vehemently reject.
Meta has also scaled back its diversity initiatives and relaxed content moderation rules on Facebook and Instagram, particularly regarding certain forms of hostile speech.
The initiative, similar to the system already implemented by X (formerly Twitter), will allow users of Facebook, Instagram and Threads to write and rate contextual notes on various content.
Meta said approximately 200,000 potential contributors in the United States have already signed up across the three platforms.
The new approach requires contributors to be over 18 with accounts more than six months old that are in good standing.
During the testing period, notes will not immediately appear on content and the company will gradually admit people from the waitlist and thoroughly test the system before public implementation.
Meta emphasized that the notes will only be published when contributors with differing viewpoints agree on their helpfulness.
“This isn’t majority rules,” the company said.
Moreover, unlike fact-checked posts that often had reduced distribution, flagged content with Community Notes will not face distribution penalties.
Notes will be limited to 500 characters, must include supporting links and will initially support six languages commonly used in the United States: English, Spanish, Chinese, Vietnamese, French and Portuguese.
“Our intention is ultimately to roll out this new approach to our users all over the world, but we won’t be doing that immediately,” the company said.
“Until Community Notes are launched in other countries, the third party fact checking program will remain in place for them,” it added.
Meta said that it would not be “reinventing the wheel” and will use X’s open-source algorithm as the basis of its system.
U.N. Secretary-General Antonio Guterres last month warned that the rollbacks to fact-checking and moderation safeguards were “reopening the floodgates” of hate and violence online.
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WASHINGTON — The White House has withdrawn the nomination of Dr. David Weldon, a former Florida congressman, to lead the Centers for Disease Control and Prevention.
The Senate health committee announced Thursday morning that it was canceling a planned hearing on Weldon’s nomination because of the withdrawal.
A person familiar with the matter, who spoke on the condition of anonymity to discuss internal deliberations, said the White House pulled the nomination because it became clear Weldon did not have the votes for confirmation.
Weldon was considered to be closely aligned with Robert F. Kennedy Jr., the U.S. health secretary who for years has been one of the nation’s leading anti-vaccine activists.
A former Florida congressman, Weldon also has been a prominent critic of vaccines and the CDC, which promotes vaccines and monitors their safety.
Weldon becomes the third Trump administration nominee who didn’t make it to a confirmation hearing. Previously, former congressman Matt Gaetz withdrew from consideration for attorney general and Chad Chronister for the Drug Enforcement Administration.
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WASHINGTON — A fossil of a partial face from a human ancestor is the oldest in western Europe, archaeologists reported Wednesday.
The incomplete skull — a section of the left cheek bone and upper jaw – was found in northern Spain in 2022. The fossil is between 1.1 million and 1.4 million years old, according to research published in the journal Nature.
“The fossil is exciting,” said Eric Delson, a paleontologist at the American Museum of Natural History, who was not involved in the study. “It’s the first time we have significant remains older than 1 million years old in western Europe.”
A collection of older fossils from early human ancestors was previously found in Georgia, near the crossroads of eastern Europe and Asia. Those are estimated to be 1.8 million years old.
The Spanish fossil is the first evidence that clearly shows human ancestors “were taking excursions into Europe” at that time, said Rick Potts, director of the Smithsonian’s Human Origins Program.
But there is not yet evidence that the earliest arrivals persisted there long, he said. “They may get to a new location and then die out,” said Potts, who had no role in the study.
The partial skull bears many similarities to Homo erectus, but there are also some anatomical differences, said study co-author Rosa Huguet, an archaeologist at the Catalan Institute of Human Paleoecology and Social Evolution in Tarragona, Spain.
Homo erectus arose around 2 million years ago and moved from Africa to regions of Asia and Europe, with the last individuals dying out around 100,000 years ago, said Potts.
It can be challenging to identify which group of early humans a fossil find belongs to if there’s only a single fragment versus many bones that show a range of features, said University of Zurich paleoanthropologist Christoph Zollikofer, who was not involved in the study.
The same cave complex in Spain’s Atapuerca Mountains where the new fossil was found also previously yielded other significant clues to the ancient human past. Researchers working in the region have also found more recent fossils from Neanderthals and early Homo sapiens.
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CAPE CANAVERAL, Florida — A launch pad problem prompted SpaceX to delay a flight to the International Space Station on Wednesday to replace NASA’s two stuck astronauts.
The new crew needs to get to the station so that Butch Wilmore and Suni Williams can head home after nine months in orbit.
Concerns about a critical hydraulic system arose less than four hours before the Falcon rocket’s planned evening liftoff from NASA’s Kennedy Space Center. As the countdown clocks ticked down, engineers evaluated the hydraulics used to release one of the two arms clamping the rocket to its support structure. This structure needs to tilt back just before liftoff.
Already strapped into their capsule, the four astronauts awaited a final decision, which came down with less than an hour remaining in the countdown. SpaceX canceled for the day. The company did not immediately announce a new launch date but noted the next try could come as early as Thursday night.
Once at the space station, the U.S., Japanese and Russian crew will replace Wilmore and Williams. The two test pilots had to move into the space station for an extended stay after Boeing’s new Starliner capsule encountered major breakdowns in transit.
Starliner’s debut crew flight was supposed to last just a week, but NASA ordered the capsule to return empty and transferred Wilmore and Williams to SpaceX for the return leg.
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An innovative solution to remotely power devices using natural biological processes could help farmers get the most from their fields. VOA’s Kane Farabaugh has more.
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NASA’s newest space telescope rocketed into orbit Tuesday to map the entire sky like never before — a sweeping look at hundreds of millions of galaxies and their shared cosmic glow since the beginning of time.
SpaceX launched the Spherex observatory from California, putting it on course to fly over Earth’s poles. Tagging along were four suitcase-size satellites to study the sun. Spherex popped off the rocket’s upper stage first, drifting into the blackness of space with a blue Earth in the background.
The $488 million Spherex mission aims to explain how galaxies formed and evolved over billions of years, and how the universe expanded so fast in its first moments.
Closer to home in our own Milky Way galaxy, Spherex will hunt for water and other ingredients of life in the icy clouds between stars where new solar systems emerge.
The cone-shaped Spherex — at 500 kilograms, or the heft of a grand piano — will take six months to map the entire sky with its infrared eyes and wide field of view. Four full-sky surveys are planned over two years, as the telescope circles the globe from pole to pole, 650 kilometers up.
Spherex won’t see galaxies in exquisite detail like NASA’s larger and more elaborate Hubble and Webb space telescopes, with their narrow fields of view.
Instead of counting galaxies or focusing on them, Spherex will observe the total glow produced by the whole lot, including the earliest ones formed in the wake of the universe-creating Big Bang.
“This cosmological glow captures all light emitted over cosmic history,” said the mission’s chief scientist Jamie Bock of the California Institute of Technology. “It’s a very different way of looking at the universe,” enabling scientists to see what sources of light may have been missed in the past.
By observing the collective glow, scientists hope to tease out the light from the earliest galaxies and learn how they came to be, Bock said.
“We won’t see the Big Bang. But we’ll see the aftermath from it and learn about the beginning of the universe that way,” he said.
The telescope’s infrared detectors will be able to distinguish 102 colors invisible to the human eye, yielding the most colorful, inclusive map ever made of the cosmos.
It’s like “looking at the universe through a set of rainbow-colored glasses,” said deputy project manager Beth Fabinsky of NASA’s Jet Propulsion Laboratory.
To keep the infrared detectors super cold — minus minus 210 degrees Celsius — Spherex has a unique look. It sports three aluminum-honeycomb cones, one inside the other, to protect from the sun and Earth’s heat, resembling a 3-meter shield collar for an ailing dog.
Besides the telescope, SpaceX’s Falcon rocket provided a lift from Vandenberg Space Force Base for a quartet of NASA satellites called Punch. From their own separate polar orbit, the satellites will observe the sun’s corona, or outer atmosphere, and the resulting solar wind.
The evening launch was delayed two weeks because of rocket and other issues.
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NEW DELHI — Encouraged by the enthusiastic reception to its DeepSeek artificial intelligence platform in January, China’s leaders are going all out to encourage AI companies to harness the power of this technology to compete with the United States and other countries in business and military spheres.
China considers AI an important tool to handle U.S. restrictions on Chinese business, particularly after DeepSeek shook up Wall Street, resulting in a loss of $589 billion for Nvidia stockholders in late January.
“The government in China works directly with the private sector and universities in the advancement and deployment of AI technology and are reducing their dependence on imports of high-technology products,” said Lourdes Casanova, director of Cornell University’s Emerging Markets Institute.
The past few weeks have seen China rolling out several new AI models, including Manus, which experts say can rival the latest model of ChatGPT. Industry experts were more than surprised to find that DeepSeek was equally efficient as ChatGPT, though it used older generation Nvidia chips. The U.S. has banned the supply of advanced chips.
“China and the U.S. have pulled way out front in the AI race. China used to be one to two years behind the U.S. Now, it is likely two to three months,” Jeffrey Towson, owner of Beijing-based TechMoat Consulting, told VOA.
“Alibaba’s Qwen is now a clear leader internationally in LLMs [large language models]. Chinese Kling AI and Minimax are arguably the global leaders in video generation,” Towson said.
Government involvement
In 2017, China released an AI development program to make the country a world leader by 2030. The government’s Next Generation Artificial Intelligence Development Plan said that AI would be adopted across different sectors and drive economic transformation.
“China has the most elaborate AI strategy compared to any other country,” Rogier Creemers, assistant professor in Modern Chinese Studies at Leiden University in the Netherlands, told VOA.
China has established a National Computing Power Grid — somewhat like electricity grids — making it possible for Chinese AI companies to invest less in their own computing power. In the U.S., each company must fend for itself, Creemers said.
Competition
ChatGPT’s updated GPT4 large language model has gotten the attention of several top-ranking CEOs of Chinese tech companies. Baidu chief Robin Li recently said his firm was under “huge pressure and a sense of crisis” after seeing the updated ChatGPT. Baidu, which has launched Ernie Bot, said “the gap [between China] and leading international levels [in the field] has widened.”
“AI plus robotics is likely where China will take a commanding lead over the U.S., just like in EVs,” Towson said. “Chinese companies like Unitree are already pulling ahead. Watch for China to surprise everyone in personalized robots, industrial robots and speciality robots,” he said.
Communist Party control
Chinese President Xi Jinping recently convened a meeting with heads of private companies, including tech firms, calling on them to “show your talent” in overcoming challenges such as an economic slowdown and U.S. restrictions on Chinese business.
“There are discussions that the growth of large language models — the technology behind chatbots like DeepSeek and ChatGPT — may be hindered by media censorship, because the models will have less diverse data to work with,” said Creemers.
On the other hand, the government’s control ensures industrial policy coordination, which is helpful in the growth of AI in China.
China is focusing more on specialized software for health and other industries, which can largely tolerate political censorship. Chinese AI models are improving diagnostic accuracy in diverse areas from detecting rib fractures to cancer.
US ban on advanced chips
“It will take some time, but it would not be a surprise if China is also soon capable of building advanced chips for AI,” Cornell’s Casanova said.
Companies such as Huawei have shown that they can design and manufacture advanced chips successfully, thereby overcoming restrictions imposed by the U.S., she said.
Towson said China is 100% dedicated to building an independent semiconductor supply chain.
“It is advancing faster than anyone thought possible. But the frontier is always advancing, and it’s unclear how this will play out over time,” he said.
“But you can do a lot with software,” Creemers said. “China can work with more chips with less computing power or with fewer sophisticated chips.”
The risk for China is not limited to chips, because the Trump administration could impose restrictions on the Chinese AI model. It could also react to China’s restriction on the use of ChatGPT, because it can violate its censorship rules.
AI and the military
China’s air force is using AI-powered biometric tests to screen potential pilots as part of a rigorous hiring process, according to state broadcaster CCTV.
“AI now plays a crucial role in interpreting candidates’ biological signals, revealing underlying health risks that might not be immediately apparent to human evaluators,” CCTV said. “This data-driven approach allows the air force to predict long-term risks, ultimately ensuring that only the most suitable candidates are chosen.”
Chinese researchers have also revealed that the Chinese army has been using Meta’s publicly available Llama model to develop an AI tool for potential military applications.
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Medecins Sans Frontiere says cholera is on the rise in Haiti. The nongovernmental health organization, also known as Doctors Without Borders, says 150 Haitians were treated for cholera between Feb. 15 and March 6. The Cite Soleil neighborhood reported 19 infections. MSF expressed concern about the trend as Haitians have less access to clean water at a time when gang violence victims are living on the streets in unsanitary conditions.  
Click here for the full story in Creole.
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Measles outbreaks in West Texas and New Mexico are now up to more than 250 cases, and two unvaccinated people have died from measles-related causes.
Measles is caused by a highly contagious virus that is airborne and spreads easily when an infected person breathes, sneezes or coughs. It is preventable through vaccines and has been considered eliminated from the U.S. since 2000.
Texas state health officials said Tuesday there were 25 new cases of measles since the end of last week, bringing Texas’ total to 223. Twenty-nine people in Texas are hospitalized.
New Mexico health officials announced three new cases Tuesday, bringing the state’s total to 33. The outbreak has spread from Lea County, which neighbors the West Texas communities at the epicenter of the outbreak, to include one case in Eddy County.
Oklahoma’s state health department reported two probable cases of measles Tuesday, saying they are associated with the West Texas and New Mexico outbreaks.
A school-age child died of measles in Texas last month, and New Mexico reported its first measles-related death in an adult last week.
Measles cases have been reported in Alaska, California, Georgia, Kentucky, Maryland, New Jersey, New York, Pennsylvania and Rhode Island.
The U.S. Centers for Disease Control and Prevention defines an outbreak as three or more related cases — and there have been three clusters that qualified as outbreaks in 2025.
In the U.S., cases and outbreaks are generally traced to someone who caught the disease abroad. It can then spread, especially in communities with low vaccination rates.
The best way to avoid measles is to get the measles, mumps and rubella (MMR) vaccine. The first shot is recommended for children between 12 and 15 months old and the second between 4 and 6 years old.
People at high risk for infection who got the shots many years ago may want to consider getting a booster if they live in an area with an outbreak, said Scott Weaver with the Global Virus Network, an international coalition. Those may include family members living with someone who has measles or those especially vulnerable to respiratory diseases because of underlying medical conditions.
Adults with “presumptive evidence of immunity” generally don’t need measles shots now, the CDC said. Criteria include written documentation of adequate vaccination earlier in life, lab confirmation of past infection or being born before 1957, when most people were likely to be infected naturally.
A doctor can order a lab test called an MMR titer to check your levels of measles antibodies, but health experts don’t always recommend this route and insurance coverage can vary.
Getting another MMR shot is harmless if there are concerns about waning immunity, the CDC says.
People who have documentation of receiving a live measles vaccine in the 1960s don’t need to be revaccinated, but people who were immunized before 1968 with an ineffective measles vaccine made from killed virus should be revaccinated with at least one dose, the agency said. That also includes people who don’t know which type they got.
There’s no specific treatment for measles, so doctors generally try to alleviate symptoms, prevent complications and keep patients comfortable.
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MEXICO CITY — The number of monarch butterflies wintering in the mountains west of Mexico City rebounded this year, doubling the area they covered in 2024 despite the stresses of climate change and habitat loss, experts said Thursday.

The annual butterfly count doesn’t calculate the individual number of butterflies, but rather the number of acres they cover as they gather on tree branches in the mountain pine and fir forests.

Monarchs from east of the Rocky Mountains in the United States and Canada overwinter there. Mexico’s Commission for National Protected Areas (CONANP) said that this year, butterflies covered 1.79 hectares) compared to only 0.9 hectares the year before.

Last year’s figure represented a 59% drop from 2023, the second lowest level since record keeping began.

After wintering in Mexico, the iconic butterflies with black and orange wings fly north, breeding multiple generations along the way for thousands of miles. The offspring that reach southern Canada begin the trip back to Mexico at the end of summer.

Gloria Tavera Alonso, the Mexican agency’s director general of conservation, said the improved numbers owed to better climatic factors and humidity.

Drought along the butterflies’ migratory route had been listed as a factor in last year’s decline. The impact of changes in weather year after year mean fluctuations are expected.

For that, Jorge Rickards, Mexico director general for the World Wildlife Fund, said “you can’t let down your guard” and must continue to expand conservation efforts.

Tavera Alonso credited ongoing efforts to increase the number of plants the butterflies rely on for sustenance and reproduction along their flyway.

Butterflies have not been faring well north of the border. The Xerces Society for Invertebrate Conservation has been counting western overwinter populations of monarch butterflies — a separate population from those that winter in central Mexico — along the California coast, northern Baja California and inland sites in California and Arizona for the last 28 years. The highest number recorded was 1.2 million in 1997.

The organization announced in February that it counted just 9,119 monarchs in 2024, a decrease of 96% from 233,394 in 2023. The total was the second-lowest since the survey began in 1997. And the first countrywide systematic analysis of butterfly abundance in the United States found that the number of butterflies in the Lower 48 states has been falling on average 1.3% a year since the turn of the century, with 114 species showing significant declines and only nine increasing, according to a study in Thursday’s journal Science.

Experts say that monarchs face risks across North America in large part due to the reduction in milkweed where the monarchs lay their eggs. The plant has been disappearing due to drought, wildfires, herbicides and urbanization.

In December, the U.S. Fish and Wildlife Service proposed that monarch butterflies receive protection as a threatened species under the Endangered Species Act.
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WASHINGTON — Giving a new meaning to the phrase mad scientists, angry researchers, doctors, their patients and supporters ventured out of labs, hospitals and offices Friday to fight against what they call a blitz on life-saving science by the Trump administration.

In the nation’s capital, a couple thousand gathered at the Stand Up for Science rally. Organizers said similar rallies were planned in more than 30 U.S. cities.

Politicians, scientists, musicians, doctors and their patients made the case that firings, budget and grant cuts in health, climate, science and other research government agencies in the Trump administration’s first 47 days in office are endangering not just the future but the present.

“This is the most challenging moment I can recall,” University of Pennsylvania climate scientist Michael Mann told the crowd full of signs belittling the intelligence of President Donald Trump, his cost-cutting aide Elon Musk and Health and Human Services Secretary Robert F. Kennedy Jr. “Science is under siege.”

Astronomer Phil Plait told a booing crowd, “We’re looking at the most aggressively anti-science government the United States has ever had.”

Rally co-organizer Colette Delawalla, a doctoral student in clinical psychology, said, “We’re not just going to stand here and take it.”

Science communicator, entertainer and one-time engineer Bill Nye the Science Guy challenged the forces in government that want to cut and censor science. “What are you afraid of?” he said.

U.S. Senator Chris Van Hollen challenged the crowd, some in white lab coats if only for show, to live up to the mad scientist moniker: “Everybody in America should be mad about what we are witnessing.”

The crowd was. Signs read “Edit Elon out of USA’s DNA,” “Delete DOGE not data,” “the only good evidence against evolution is the existence of Trump” and “ticked off epidemiologist.”

Health and science advances are happening faster than ever, making this a key moment in making people’s lives better, said former National Institutes of Health Director Francis Collins, who helped map the human genome. The funding cuts put at risk progress on Alzheimer’s disease, diabetes and cancer, he said.

“It’s a very bad time with all the promise and momentum,” said Collins.

“I’m very worried about my country right now,” Collins said before breaking out into an original song on his guitar.

Emily Whitehead, the first patient to get a certain new type of treatment for a rare cancer, told the crowd that at age 5 she was sent hospice to die, but CAR T-cell therapy “taught my immune system to beat cancer” and she’s been disease free for nearly 13 years.

“I stand up for science because science saved my life,” Whitehead said.

Friday’s rally in Washington was at the Lincoln Memorial, in the shadow of a statue of the president who created the nearby National Academy of Sciences in 1863.

From 11 million kilometers away from Earth, NASA proved science could divert potentially planet-killing asteroids, former NASA Administrator Bill Nelson said. On his space shuttle flight nearly 40 years ago, he looked down to Earth and had a “sense of awe that you want to be a better steward of what we’ve been given,” he said.

The rallies were organized mostly by graduate students and early career scientists. Dozens of other protests were also planned around the world, including more than 30 in France, Delawalla said.

Protesters gathered around City Hall in Philadelphia, home to prestigious, internationally recognized health care institutions and where 1 in 6 doctors in the U.S. has received medical training.

“As a doctor, I’m standing up for all of my transgender, nonbinary patients who are also being targeted,” said Cedric Bien-Gund, an infectious disease doctor at the University of Pennsylvania. “There’s been a lot of fear and silencing, both among our patients and among all our staff. And it’s really disheartening to see.” 
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