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Researchers created a swarm of 1,024 tiny robots to do their bidding. So far, the only job they're given is to arrange themselves into a shape. But future versions could perform all sorts of tasks.

After learning that they'd spent decades restocking Colorado's lakes and streams with the wrong fish, biologists are now ready to release the right one.

The president says thousands of Yazidis had been rescued from Sinjar mountain in northwestern Iraq, thanks to the targeting of Islamic insurgents who threatened them.

Dr. Gil Yosipovitch is a leading scientist in the field of itch. He says he hopes to gain more respect for the debilitating power of chronic itch — and to get more doctors on the search for a cure.

The late actor and comedian's wife, Susan Schneider, said his "sobriety was intact" and that he was in the early stages of the debilitating muscular disease when he took his life on Monday.

Funeral services were held Thursday for Kevin Ward Jr., the driver killed on the track after being hit by former NASCAR champion Tony Stewart. North Country Public Radio's Brian Mann attended the service; he speaks with Robert Siegel about the funeral and possible investigations into the incident.

Farhad Atrushi, the governor of the Iraqi province of Duhok, joins Robert Siegel to speak about the refugees now flooding his predominantly Kurdish city.

Nearly 80 percent of all the U.S. currency in the world is in $100 bills. But some people want to get rid of the bill altogether.

Justice Department officials say Alamance County Sheriff Terry Johnson illegally targeted Latino drivers and detained people without probable cause. Johnson's attorneys say the charges are baseless.

A Chinese company this week made a play to become what could be likened to The Walt Disney Company of China. Steve Inskeep talks to Clifford Coonan, Asia bureau chief for The Hollywood Reporter.