US Capitol: Police officer dies after car rams security barrier

So far, no one else on board has developed symptoms, Maria Van Kerkhove, WHO acting director for epidemic and...

One February afternoon, a 50-year-old Asian woman was waiting in line at a bakery in Queens, New York, when...

A major topic of conversation at the ARPA-E summit was geologic hydrogen—there’s a ton of excitement about efforts to...

The world is full of extraordinary young people brimming with ideas for how to crack tough problems. Every year,...