Most scientists agree that the impact of an asteroid hitting Earth played a major role in the extinction of dinosaurs but now there's a brand new theory about how exactly that happened.
The National Institutes of Health is beginning a handful of studies to test possible treatments for long COVID, an anxiously awaited step in U.S. efforts against the mysterious condition that afflicts millions.
More than 70 years after doctors at Johns Hopkins Hospital took Henrietta Lacks’ cervical cells without her knowledge, a lawyer for her descendants said they have reached a settlement with a biotechnology company that they accused of reaping billions of dollars from a racist medical system.