After centuries of persecution, brown bears are showing up in some unexpected places.

A growing body of research suggests that trees can communicate and cooperate in the wild.

On July 11, 2002, the researchers revealed that they had synthesized the polio virus, which had been wiped out in the US in 1979. It was the first time a virus had been created from scratch with synthetic DNA. The work was funded by the Pentagon in part to establish whether terrorists could pull off such a feat. The answer was yes.

On the night sky’s understated importance in biological functions below.