Since we can’t talk to them, most folks' knowledge of animals begins and ends with some biology classes and maybe a pet, ...

Astronomers report a strange cosmic blast that looked like a kilonova, then behaved like a supernova, hinting at a possible first “superkilonova” and leaving scientists debating how stars truly die.

Every animal with a brain needs sleep — even a few without a brain do, too. Humans sleep, birds sleep, whales sleep and even ...