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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. … Read more

When Dr. C. Michael Gibson, a cardiologist at Harvard Medical School, goes to heart disease meetings, he can’t help noticing a change. “We will sit around at dinner and halfway through the meal, we will simultaneously push our plates away,” Dr. Gibson said. “We look at each other and laugh and say, ‘You, too?’” They … Read more

A federal judge ordered the Trump administration to hold off on a plan that would cut $4 billion in federal funding for research at the nation’s universities, cancer centers and hospitals. The funds disbursed by the National Institutes of Health cover the administrative and overhead costs for a vast swath of biomedical research, some of … Read more

Helen Hays, an intrepid ornithologist who for nearly 50 years led scores of volunteers to Great Gull Island, a postage-stamp islet in Long Island Sound, where they endured dive-bombing birds and fierce ocean storms to help revitalize it as one of the world’s largest nesting sites for common and roseate terns, died on Feb. 5 … Read more

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 … Read more

The No. 2 official at the National Institutes of Health abruptly resigned and retired from government service on Tuesday, in another sign that the Trump administration is reshaping the nation’s public health and biomedical research institutions. The official, Dr. Lawrence A. Tabak, a dentist and researcher, was long considered a steadying force and had weathered … Read more

Strange things live in the depths of the ocean. Even the light of the sun cannot penetrate the inky blackness below. The pressure of the water above is crushing. And yet life somehow survives, adapted to that strange world. Many of the fish there are partly luminescent to attract prey. They are omnivores, making up … Read more

Robert F. Kennedy Jr. spent the first day of his back-to-back confirmation hearings deftly avoiding questions about his views on vaccines. On the second day, when a prominent Republican senator insisted there was no link between vaccines and autism, Mr. Kennedy shot back that a new study “showed the opposite.” “I just want to follow … Read more

The warnings, on thousands of products sold in California, are stark. “Use of the following products,” one label says, “will expose you to chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.” Now, new research shows the warnings may be working. A study published Wednesday in the journal … Read more

A worsening measles outbreak has taken root in Texas, sickening two dozen and hospitalizing nine on the western edge of the state, where childhood vaccination rates have dwindled in recent years. As of Tuesday, 22 children and two adults had been infected, all of whom were unvaccinated, local health officials said. The outbreak comes as … Read more