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All work is strictly regulated by the FDA, which evaluates the risks and benefits of the procedures and is expected to first consider the use of these devices in people with severe disabilities or degenerative diseases. (The agency did not comment specifically on Neuralink, but said it requires routine reporting of expected and unanticipated events in such studies.) Beyond that, researchers are divided over the prospect of widespread use by people without disabilities, who might want an implant to communicate without speaking or to download a language, as Musk has mused. Some researchers predict that availability for general consumers will…

As of April, the world's oldest living man is believed to be Englishman John Alfred Tinniswood at 111 years old, according to Guinness World Records. (Guinness lists María Branyas Morera, a California native living in Spain, as the world's oldest woman, at 117.) When Mr. Markoff heard the news of his rise to the top of the list, "he just smiled and said, 'Well, someone has to be there,'" his daughter said in an interview. He stood out not only for his longevity but also for a lucidity unusual for his age. Until her final months, she pored over the…

Monday is the first opportunity for lawmakers to ask him about his agency's record-keeping practices. For Republicans on the committee, the hearing is also the culmination, so far, of a long campaign against American scientists and health officials who they say helped trigger the Covid pandemic. No new evidence of a pandemic emerging from a laboratory, with or without the help of American taxpayer funding, has emerged in a series of high-profile hearings over the past year. In a report on Monday, titled “Republicans' Fauci Flop,” Democratic lawmakers said Republicans on the committee failed to prove that the coronavirus, known…

In April, Ms. Pisano became the second person to receive a kidney transplant from a genetically modified pig. Hers was a particularly complicated case: she suffers from heart and kidney failure and she received the organ only eight days after receiving a mechanical heart pump. Ms. Pisano was at risk of dying without the heart pump, a device implanted in patients who need a heart transplant. But there is a critical shortage of available human donor kidneys, and her heart disease has made her ineligible to receive one. She is the first known heart pump patient to receive an organ…

Those most likely to be involved are younger and able to walk, "able to move and put themselves in harm's way," Dr. Pillemer said. Most had at least moderate cognitive impairment. The studies also found that incidents occurred more often in specialized dementia units. “Memory care has positive elements, but it also puts residents at greater risk of assault,” Dr. Pillemer said. “More people with brain diseases, uninhibited people, gather in a smaller space.” Because so many, both perpetrators and victims, suffer from dementia, "sometimes we can't say what started it all," said Leanne Rorick, director of a program that…