Astronomers on Tuesday said that the asteroid designated 2024 YR4 had become the most likely sizable space rock ever forecast to impact planet Earth. The object, first detected in December, is 130 to 300 feet long and expected to make a very close pass of the planet in 2032. Its odds of impacting Earth on…
At the height of the Covid-19 pandemic, millions of people in poor nations died literally gasping for breath, even in hospitals. What they lacked was medical oxygen, which is in short supply in much of the world. On Monday, a panel of experts published a comprehensive report on the shortage. Each year, the report noted,…
The words “optimal” and “optimize” derive from the Latin “optimus,” or “best,” as in “make the best of things.” Alessio Figalli, a mathematician at the university ETH Zurich, studies optimal transport: the most efficient allocation of starting points to end points. The scope of investigation is wide, including clouds, crystals, bubbles and chatbots. Dr. Figalli,…
President Trump’s order that the United States exit the World Health Organization could undo programs meant to ensure the safety, security and study of a deadly virus that once took half a billion lives, experts warn. His retreat, they add, could end decades in which the agency directed the management of smallpox virus remnants in…
The National Academies of Sciences, Engineering and Medicine, or NASEM, is an independent, 162-year-old nongovernmental agency tasked with investigating and reporting on a wide range of subjects. In recent years, diversity, equity and inclusion — collectively known as D.E.I. — have been central to its agenda. But the Academies’ priorities changed abruptly on Jan. 31….
Funds from the world’s richest nation once flowed from the largest global aid agency to an intricate network of small, medium and large organizations that delivered aid: H.I.V. medications for more than 20 million people; nutrition supplements for starving children; support for refugees, orphaned children and women battered by violence. Now, that network is unraveling….
The Trump administration on Tuesday issued a waiver for lifesaving medicines and medical services, offering a reprieve for a worldwide H.I.V. treatment program that was halted last week. The waiver, announced by Secretary of State Marco Rubio, seemed to allow for the distribution of H.I.V. medications, but whether the waiver extended to preventive drugs or…
Over the past year, Muanema Fakira noticed something odd about the eyes of her 1-year-old daughter Sumaya. Her left eye was cloudy. It did not gleam with curiosity or glint in the sun. When the problem persisted, Ms. Fakira made the rounds to health clinics in their town in central Mozambique. Doctors said they could…
The Trump administration has instructed organizations in other countries to stop disbursing H.I.V. medications purchased with U.S. aid, even if the drugs have already been obtained and are sitting in local clinics. The directive is part of a broader freeze on foreign aid initiated last week. It includes the President’s Emergency Plan for AIDS Relief,…