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Minorities are historically underrepresented in science, technology, engineering and math fields. John Dimandja is a Congolese chemist on the faculty of Spelman College who's pointing the way into STEM careers for students of color.

A mouse's brain clears out toxins during periods of deep sleep — including toxins that form the sticky plaques associated with Alzheimer's disease. Could the same hold true for people?

Congress has extended tax credits for clean energy as part of a $1.8 trillion spending bill. Solar and wind power companies say it will catapult the industry at a time when costs are already falling.

In an interview with NPR's Steve Inskeep, Obama spoke at length on the subject of identity. The question of who we are as Americans, Obama said, has been a focus since the country's founding.

A decade after playwright August Wilson's death, his childhood home in Pittsburgh is in bad shape. As Erika Beras of WESA reports, community members have mixed feelings on what to do with what's left.

It could still take weeks to contain the raging blaze in Southern California, which has destroyed nearly 100 homes and put more than 80,000 people under mandatory evacuation orders.

Officials say they've found the first indication that mosquitoes are transmitting Zika virus in the U.S. Four people in South Florida are infected; travel or sexual transmission has been ruled out.

Early Tuesday morning, NASA's New Horizons Spacecraft will complete the first-ever flyby of the dwarf planet Pluto. NPR's Geoff Brumfiel reports live from the New Horizons Control center.

Terminal cancer patients sometimes get chemotherapy in the belief that it will ease their symptoms. But a study finds that many who get the treatment near death actually have a poorer quality of life.

The pope arrives in the country on Friday. Commentators James Kassaga Arinaitwe and Viviane Rutabingwa give him a crash course in the country's issues.