Viruses that infect bacteria can still do their job in microgravity, but space changes the rules of the fight.

Researchers have identified a previously unknown giant virus that may offer new insight into how complex life first evolved.

The human genome is made up of 23 pairs of chromosomes, the biological blueprints that make humans … well, human. But it turns out that some of our DNA — about 8% — are the remnants of ancient viruses ...