The Very First Case of COVID-19 Was Much Earlier Than We Knew, New Study Indicates

A Coronavirus Epidemic Hit Humanity 20,000 Years Ago, DNA Study Reveals

Adolescent marijuana, alcohol use held steady during COVID-19 pandemic

Dinosaur species large and small didn't just pass through the Arctic -- they made it their year-round home and probably developed wintering strategies like hibernation or growing insulating feathers, according to a new study