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Certain birth defects in male children are on the rise, and nobody knows why. Scientists say basic research into how external genitalia evolved in reptiles and rodents might offer a few clues.

The order by Attorney General Jeff Sessions and the bid to reassess an agreement in Baltimore may signal that the Trump administration plans to scale back investigations and reopen past deals.

The Pentagon says the U.S. dropped the largest conventional weapon ever used in combat to hit an underground ISIS complex. Some speculate the action was also meant to send a message to North Korea.

A new study finds that too little sleep boosts a signal in the body that may drive a stronger desire to eat. It's the latest evidence linking sleep deprivation to overeating and increased body weight.

The shopping spree by Southeast Asian nations is expected to total around $40 billion over the next year. But the U.S. has competition, from Russia, Europe and other countries in Asia.

Using light-conductive materials, researchers have built a robot hand that can sense shapes and textures. Soft robotics holds promise for better prosthetics or machines with a more "human" touch.

The president-elect added a number of key figures to his administration this week. We take a look at his choices.

Steve Inskeep talks with NPR's David Schaper about what might have caused a commuter train to overshoot the terminal Thursday morning. At least 100 people were injured, and one death was reported.

It's likely President Hassan Rouhani will cite the unrest as a reason for reform while hardliners could use it to justify a crackdown.

North Korea plans to close its Punggye-ri nuclear test site Wednesday. Adam Mount of the Federation of American Scientists explains the significance of the site and what its closure signals.