Spartans, ninjas and more! Which fighters would you want on your side? ...read more

Almost — but not quite — humanlike robots can freak us out. But for roboticists, that feeling is an opportunity to get things right. ...read more

Superbugs can leave doctors with few options for treatment. Here's how these pesky bacteria are created, and the ways that scientists are working to fight back. ...read more

Reduced exposure to nicotine and toxic chemicals in tobacco causes changes in almost every part of your body, from better hearing to improved fertility. ...read more

We tend to think of time as an arrow, always moving in one direction at a uniform rate. But physics is challenging our understanding of time's true nature. ...read more

The human-dog relationship precedes the agricultural revolution. Here's what we know about how it began — with wolves — and the evolving complexity of our loving connection to canines. ...read more

In the forests of Indonesia, citizen scientists discover an unsettling revelation about butterflies. ...read more

Kara Yopak has amassed hundreds of shark brains. Now she's using them to better understand how the animals behave. ...read more

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Nordic nations frequently top the charts thanks to their comprehensive public services. ...read more