There is a large diversity in the chemical composition of astronomical objects such as planets, comets, circumstellar ...

Learn more. Recently we celebrated astronauts Barry Wilmore and Suni Williams’ safe return to Earth. Wilmore, a veteran of three spaceflights, has accumulated 464 days in space. Williams ...

Our planet’s first known mass extinction happened about 440 million years ago. Species diversity on Earth had been increasing over a period of roughly 30 million years, but that would come to a ...

Satellite images from space are allowing scientists ... Tropical forests are the most biodiverse ecosystems on Earth, making ...

The statement in advance that the next American moonwalkers would include others besides white men was rooted in the perceived necessity to impose diversity among NASA’s space explorers.

But “diversity” means different things to different people, sociologist Janet Xu of Princeton University and colleagues report March 12 in Science Advances. That means devising ways to turn ...