
How quickly does COVID immunity fade? What scientists know
Vaccination, infection with SARS-CoV-2 and a combination of both provide varying degrees of protection.
Vaccination, infection with SARS-CoV-2 and a combination of both provide varying degrees of protection.
Andrew Robinson reviews five of the best science picks.
A 319-million-year-old fossil provides the oldest known evidence of preserved vertebrate brain tissue. This specimen offers insights into the brain evolution of ray-finned fishes, the most diverse group of living vertebrates.