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NASA astrobiologist David Morrison has taken it upon himself to answer hundreds of questions about the science of doomsday predictions. At NASA's Ask an Astrobiologist site, Morrison thoughtfully responds to questions like: Will we have Christmas this year?

In Cologne and other German cities, attacks on New Year's Eve have led to criminal complaints, as police suspicion turns to asylum seekers. David Greene talks to German journalist Maximilian Popp.

Donald Marron of the Urban Institute joins Here & Now's Jeremy Hobson to explain why he thinks tax cuts don't always guarantee positive results.

A meeting next week will determine if the Zika virus is an international health emergency. Renee Montagne talks to Dr. Anthony Fauci, head of the National Institute of Allergy and Infectious Diseases.

Political historian Allan Lichtman says he sees elections the way geophysicists see earthquakes — as events fundamentally driven by structural factors deep beneath the surface, rather than by superficial events at the surface.

American and Iranian officials are praising the nuclear agreement reached in Vienna, Austria, on Tuesday. But Iran is a regional rival to many Arab states — many would say a regional threat.

Hillary Clinton has just proposed a $500 million initiative to help states combat bullying. Here are some things you should know.

Smithfield CEO Larry Pope tried to reassure lawmakers that the sale of his Virginia based company will not mean a transfer of jobs to China or a reduction in food safety. He appeared before lawmakers on the Senate Agriculture Committee on Wednesday.

The U.S. president welcomed the Turkish leader to the White House for talks about Syria and also Turkey's decision to buy a Russian defense system.

Joe Biden's reaction to criticism of once working with segregationists highlights the complicated politics of race. NPR's Scott Simon talks with Robin DiAngelo, author of White Fragility.