President Carter helped lead a global health effort to eradicate the Guinea worm, a painful parasite which once infected more than 3 million people a year. Cases now number about a dozen a year.

A Supreme Court ruling eliminated the requirement of sheltering homeless people in some states. Advocates worry the ruling also motivates cities hostile to shelters to get rid of them altogether.

On this week's "My Unsung Hero" from Hidden Brain, Mark Metersky was a medical student at a New York City hospital. He was frustrated with one of his patients when he saw something that surprised him.

Jimmy Carter's one-term presidency saw several foreign policy achievements, but was marked by economic struggles at home and the year-long Iranian hostage crisis.

NPR's Mary Louise Kelly talks with Margie Mason, investigative reporter at the AP, about the alleged exploitation and abuse of the prison labor force in Alabama.

Eyewitness testimony from several prisoners held for years in Syria's most notorious prison tell NPR about systematic executions. They recall details of how mass murder was committed and covered up.

Psychological first aid is the idea that interventions that can be done in the wake of a traumatic event to promote resilience and healing. Psychiatrist Robin Gurwitch helped develop the protocol.

New research shows artificial light can upend underwater communities around coral reefs just like they do on land.

The cold, rainy winter now gripping Gaza is taking its toll. At least five infants have died of hypothermia in recent days, according to Gaza health officials.