nytimes.com / .nytimes-com-science / Page 9

The billionaire Kenneth C. Griffin, who bought the stegosaurus fossil for $44.6 million, is loaning it to the American Museum of Natural History in New York for four years.

On America's large dairy farms, milking is a vast operation, and the potential for disease transmission is worrying, health experts say.

He came up with an innovative equation called the Ricci flow that helped mathematicians explore fundamental questions that were once out of reach.

A study of a 12,800-year-old skull of a toddler offers a glimpse at how early Americans found food, and how their hunts may have led to a mass extinction.

Researchers are trying a new strategy to reintroduce Hawaiian crows, which have been extinct in the wild for two decades.

After a court overturned a ban, the agency has proposed restricting chlorpyrifos to 11 food crops, illustrating the limits of federal regulation.

Mr. Isaacman's company Shift4 Payments made him a billionaire, and he has financed two trips to orbit on SpaceX vehicles, including a daring spacewalk in September.

GenCast, from the company's DeepMind division, outperformed the world's best predictions of deadly storms as well as everyday weather.

Federal health agencies closed their investigations into the bacterial outbreak that sickened 104 people and was linked to onions on the fast-food chain's signature Quarter Pounders.

Patients often are in the dark about which organs remain and which were removed -- particularly the ovaries, which profoundly influence lifelong health.