Why Trump Picked a Science Advisor, Michael Kratsios, Who Isn’t a Scientist

President Trump last week formally nominated Michael Kratsios, a member of the first Trump administration with no degrees in science or engineering, to be his science adviser. Science policy experts…

State Department Permits Distribution of H.I.V. Medications to Resume — for Now

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,…

In Seattle, a Meeting of 5,444 Mathematical Minds

The world’s largest gathering of mathematicians convened in Seattle from Jan. 8 to Jan. 11 — 5,444 mathematicians, 3,272 talks. This year the program diverged somewhat from the its traditional…

For Children in Rural Mozambique, the Future Comes Into Focus

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…

The Hitchhiker’s Guide to the Hummingbird

Flower mites spend their lives slurping nectar and nibbling pollen in flowers throughout the tropics. To travel from one blossom to another, these tiny, eight-legged creatures hitch rides on the…

‘This Is a Dangerous Virus’

When bird flu first struck dairy cattle a year ago, it seemed possible that it might affect a few isolated herds and disappear as quickly as it had appeared. Instead,…

The Perfect Cacio e Pepe Recipe, According to Science

A group of Italian physicists has dared to tinker with the traditional recipe for cacio e pepe, the challenging Roman dish consisting of pasta, pecorino cheese and black pepper. In…

Yes, Some Vaccines Contain Aluminum. That’s a Good Thing.

Robert F. Kennedy Jr. has often trained his criticisms of vaccines on a common ingredient: aluminum, which he has suggested is responsible for a litany of childhood ailments, including food…

Sacklers Up Their Offer to Settle Purdue Opioids Cases, With a New Condition

Seven months after the Supreme Court struck down a deal that would have resolved thousands of opioid cases against Purdue Pharma, the company’s owners, members of the Sackler family, have…

Cats May Have Gotten Bird Flu From Raw Pet Food. Here’s What to Know.

Federal officials who spent the last year grappling with a surge of bird flu infections in cows and people are now confronting a spate of new cases in cats, some…