Catching COVID-19 twice was found to increase the risk of post-viral syndrome, contrary to popular belief.

Catching COVID-19 twice was found to increase the risk of post-viral syndrome, contrary to popular belief.
It’s not to be sneezed at.
The ancient coloring tool supports the idea that we weren’t the only human species with symbolic culture.
A protein that repairs damaged DNA could provide some answers to this long-standing question.
After conjunction and perihelion, the comet has come out from behind the solar glare and the first image…