Earth is covered in water—but scientists still debate how it got here in the first place. This video explores the mysterious ...
A team of nuclear physicists has pulled off something that, until recently, existed only in theoretical models and the ...
COLORADO SPRINGS–Thirteen years ago a 20-m asteroid streaked without warning into Earth’s atmosphere before exploding over the Russian city of Chelyabinsk, injuring 1,500 people and causing widespread ...