Researchers at the Wuhan Institute of Virology in China said they discovered a new coronavirus in bats that enters cells ...

Researchers have discovered a virus that could enter human cells in a similar way to COVID-19. But they caution it's much more poorly adapted to humans.

Bits of viral genes incorporated into human DNA have been linked to cancer, ALS and schizophrenia. But many of these genes may not be harmful, and could even protect against infectious disease.