In one recent study, the challenging regimen added just 77 days of life over three years. Often, kidney disease can be managed in other ways. nyti.ms/4cJNTQ9

In a South Dakota cavern, scientists are working to capture the most elusive particles in the universe. nyti.ms/477GJE0

Many doctors say it is too dangerous to perform the common surgeries on people with high body mass indexes, but patients say they are facing discrimination. nyti.ms/3XuWQs4

The troubled spacecraft is scheduled to undock on Friday for a trip back to Earth while two NASA astronauts will stay in orbit. nyti.ms/4eanN9V

Prodded by Oliver Sacks, he wrote a humane, award-winning book about the condition. A music maven, he also wrote liner notes for the Grateful Dead and his friend David Crosby. nyti.ms/4cSW8t8

Steve Silberman wrote an acclaimed, award-winning book about the history of autism. He had a second life in music as a Deadhead who became known to the Grateful Dead’s archivists and wrote liner notes for some of the band’s albums. nyti.ms/3Zcfo1m

Chimps and other apes have been observed making more than 80 meaningful gestures. Three theories have tried to explain why. nyti.ms/4e9V9FW

Researchers have long faulted the body mass index as an unreliable indicator of health. A replacement has been gaining support: the body roundness index. nyti.ms/3Zdj8jc

Without bats to eat insects, farmers turned to more pesticides, a study found. That appears to have increased infant deaths. nyti.ms/4eb1kK2

The percentage of middle and high school students reporting that they vaped tobacco products dropped to about a third of those students reporting use of e-cigarettes at a vaping peak in 2019, a new survey shows. nyti.ms/3AU5eZp

“The Great Elephant Migration,” a touring public-art exhibition that has opened in New York, not only depicts wildlife but also helps save it. nyti.ms/3TnpKrB

BepiColombo, a joint European-Japanese mission, completed its latest flyby of Mercury, sending back a sneak peek of the cratered planet it will begin to orbit in 2026. nyti.ms/3ZgIdd3

More than 150 people were sickened from products sold at smoke and vape shops, providing evidence of the lax regulation of new food items. nyti.ms/47m6Ff9

In 2016, the global health authorities removed a type of poliovirus from the oral vaccine. The virus caused a growing number of outbreaks and has now arrived in Gaza. nyti.ms/4cQOZcM

William Cope Moyers told the world he had it all figured out after beating his addiction to crack cocaine. But then a dentist gave him an opioid pain killer. nyti.ms/3Mxmqqa

The D.E.A. is increasing its quota for the popular stimulant as patients still struggle to fill prescriptions. nyti.ms/3ATopT7

A small team in a remote corner of Colombia is surveying every tree in an effort to better understand how much planet-warming carbon the Amazon actually stores. nyti.ms/4d4HwXS

Previous human infections occurred in workers on farms. But community transmission of the virus remains unlikely for now, experts said. nyti.ms/3ThzPWU

The capsule, which returned without astronauts, and other space programs at Boeing have suffered many delays and cost overruns. nyti.ms/3ZhlQnY

Two NASA crew remain on the International Space Station after the troubled vehicle they rode undocked and then landed in the New Mexico desert nyti.ms/3ThoqGA