For decades, scientists have searched for dark matter to explain what they observe in the universe. Despite massive detectors, underground labs, and space missions, no direct evidence has been found.

"This is a structure we've never seen before, so it could be a new class of dark object." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A tech C.E.O. explains why A.I. probably won’t cure diseases anytime soon. Hint: You still need humans. By Kevin Roose Casey Newton and Rachel Cohn The leaders of the biggest A.I. labs argue that ...

Webs can be decorated with decoys, fine-tuned like guitars—and hold secrets about evolution. A Cyclosa spider is camouflaged on a web with debris attached to make itself less visible at the Los Amigos ...