Portland volunteers "taxi" Northern red-legged frogs to and from their egg-spawning ground. The service protects them from becoming roadkill on a highway.

NPR's Leila Fadel, Jane Arraf, and Ruth Sherlock share their reporting from Syria more than a week after the fall of the Assad regime.

Wayfinding, the art of sea navigation without modern tools, takes center stage in Disney's "Moana" films. NPR's Steve Inskeep talks t0 an expert about wayfinding and its cultural significance.

The Food and Drug Administration is considering banning the food dye known as Red No. 3. It's used in candy, snacks and soda. An FDA spokesman says a decision could come "soon".

New research suggests that black plastic is associated with health risks. Researchers found toxic flame retardants in many black plastic household goods.

NPR's Steve Inskeep talks to Stacie Pettyjohn of the Center for a New American Security, about why the federal government hasn't provided more details about drones spotted over some East Coast states.