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Poland is a staunch U.S. ally, but it's not included in a program that waives visa requirements for visitors. Some argue this presents an expensive hurdle that keeps many from traveling to America.

Donald Trump struggled through a foreign policy interview wast week, and Hillary Clinton apologized for her private email server. NPR's Linda Wertheimer discusses politics with correspondent Domenico Montanaro.

Ah, the sweet taste of victory. And now there's scientific evidence to back that up. NPR's Linda Wertheimer talks to researcher Robin Dando at Cornell, who used hockey fans to test his theory.

States are starting to move away from using solitary confinement in prison. NPR's Linda Wertheimer speaks with Bernie Warner, who is overseeing moving prisoners out of solitary in Washington.

Actor Martin Milner, whose work as Officer Pete Malloy introduced generations of Americans to a tough and honorable policeman on Adam-12, died on Sunday.

The increasing popularity of the trail is raising concerns at Baxter State Park in Maine, where thru-hikers often complete their arduous journeys with a celebratory climb up Mount Katahdin.

A Marquette University scientist slogged through more than 200 rice varieties to find the most promising few; he then subjected those to real Wisconsin weather on rooftop paddies outside his lab.

Many fruits and vegetables must be harvested by hand because it's hard and costly to design machines that won't damage them. But as farm labor dwindles, there's a new push to develop more farm robots.

New research finds impressive academic gains from the city's vaunted preschool program now that its first graduates are beginning high school.

For decades, two rival West Bank shops have been selling a type of ice cream that stretches like melted mozzarella on a pizza. The secret to the frozen treat is part science, part presentation.