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This spring, doctors at the University of Pennsylvania and Johns Hopkins University will try transplanting kidneys from Hep C-infected donors into uninfected patients.

Author Elaine Kamarck explains superdelegates, the difference between caucuses and primaries, what happens in a brokered convention and how the rules of primaries can sometimes change.

A new study in the journal Nature Climate Change finds weather plays a role in determining the quality of wine produced.

The Supreme Court heard arguments Wednesday in a case challenging an Obamacare provision on birth control coverage on religious freedom grounds.

Glen Weldon's book The Caped Crusade traces the evolution of Batman, and argues that his anger and obsession are only part of the character; his childhood anti-crime oath makes him a hopeful figure.

Residents of a multi-ethnic neighborhood in Brussels say they're stunned to find two terrorist brothers were living in their midst. Locals say they don't understand what's happening in their city.

At least 30 people died in the attacks at an airport and metro station in Brussels Tuesday. The identities of some of the victims are slowly being made public.

NPR's Robert Siegel talks to New York Times correspondent Rukmini Callimachi about the tradecraft of the terrorists who attacked Paris and Brussels.

Speaking at Stanford University, she argued that Republicans' approach to fighting ISIS would "make America less safe and the world more dangerous."

House Speaker Paul Ryan delivered a speech Wednesday on the state of politics in the U.S.