NEW YORK — Humans and Neanderthals cozied up from time to time when they lived in the same areas tens of thousands of years ago. But we don’t know much about who got with whom, or why. A new genetic ...

On Tuesday morning, Alexander Sanchez-Ramos went outside to smoke a cigarette on the porch of his Soldotna home when he noticed a cluster of unmarked SUVs with tinted windows gathering on his street.

I was born in Washington, DC, in 1964, the oldest of three sisters, but the place that truly formed me as a scientist was Hilo, on the Big Island of Hawaii. Growing up there, far from the mainland ...