All it takes is two dots and a slightly curved line for our brains to think that, say, random Cheerios bobbing in milk or a pattern in the snow are sort of like human faces. As it turns out, our ...

LONDON (AP) — Russian opposition leader Alexei Navalny was poisoned by the Kremlin with a rare and lethal toxin found in the skin of poison dart frogs, five European countries said Saturday.

Astronomers have detected a smelly gas best known for the odor of rotten eggs—hydrogen sulfide—in the atmospheres of four giant planets far beyond our solar system. While the gas may be unpleasant on ...