It's the first country to approve a COVID-19 vaccine, but it has not finished Phase III trials to assess safety and effectiveness in the general population.

A new study reveals there were multiple species of Deinosuchus, the giant crocodylians that lived 75 million years ago. They were among the largest predators in the ecosystem and ate dinosaurs.

Hair is soft compared with steel, but shaving can dull a razor surprisingly quickly. A new study examines exactly how a strand of hair can chip and crack a sharp blade.

Adjuvants play a crucial role in many vaccines' effectiveness. Some scientists say there needs to be more research into developing a wider variety of adjuvants because of how important they are.

Scientists found that attaching small weights to pigeons causes them to shoot up in the social hierarchy. The finding is important because scientists often attach trackers to pigeons.

Scientists have identified an aggressive bone cancer — for the first time — in the fibula of a dinosaur that lived 76 to 77 million years ago. The diagnosis sheds new light on dinosaurs and disease.

With the flu season looming, public health officials urge nearly all Americans over 6 months old to get immunized starting next month. Strategize now to avoid getting the flu while COVID-19 is raging.

NASA and SpaceX are welcoming home two astronauts who splashed down safely in the Gulf of Mexico after several months on the International Space Station.

NPR's Ailsa Chang talks with Dana Scott, a doctoral candidate in economics at Yale University, about her study that looked at whether expanded jobless benefits reduced incentives to look for work.

Scientists have modified the genes of a squid, and genetically-altered octopuses could be coming soon.

Studies involving COVID-19 vaccine candidates in monkeys show promise of an effective vaccine, but it will take large-scale human trials to know for sure if they work.

Scientists found that the outer stones of the prehistoric structure originated about 15 miles away from where the structure stands.

Scientists are now checking to see if purified blood serum from people who have recovered from COVID-19 might be more than a useful treatment. Perhaps it's a way to prevent disease in someone else.

In 1979, dubious psychological techniques were used to put a teenager behind bars for life. These flawed ideas may still be at play in other criminal cases.

With the coronavirus spreading out of control in many parts of the U.S., some experts say the strategy of testing and tracing can't contain the pandemic until lockdowns bring case numbers down.