When clusters of frog cells known as xenobots form a Pac-Man shape, they are especially efficient at replicating in a new way, researchers say.

Psychedelics hold lots of promise as treatments for mental health disorders like PTSD and depression. But the drugs still face hurdles.

Once hailed as a potential game changer, more complete data now reveal drawbacks of Merck’s antiviral COVID-19 pill, molnupiravir.

A 2018 study suggested the ocean surrounding Antarctica might be taking up less CO₂ than thought, but new data suggest it is still a carbon sink.