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A child's question and an old paradox: If the sky is filled with stars, why is it dark at night? Physicists say the answer lies in those deep dark spaces between stars — evidence of our expanding universe.

The three candidates in northern New York’s 115th Assembly District race recently faced each other in a televised debate. Plattsburgh City Councilor…

The European Union was awarded the 2012 Nobel Peace Prize Friday. Kristian Berg Harpviken closely follows the Norwegian Nobel Committee's process each year. He joins guest host Celeste Headlee to discuss why he thinks the committee chose the EU.

Vice President Joe Biden and Congressman Paul Ryan butted heads over everything from Middle East policy to abortion. Guest host Celeste Headlee talks style and substance with two former speechwriters: Paul Orzulak, who helped Biden prepare for last night's debate, and columnist Mary Kate Cary, who worked with the George H.W. Bush administration.

Fifty years after Cesar Chavez created a farm workers union, President Obama dedicated the labor leader's home as a national monument. But a new book calls Chavez a "tragic hero." Matt Garcia wrote From the Jaws of Victory: The Triumph and Tragedy of Cesar Chavez and the Farm Worker Movement, and he speaks with guest host Celeste Headlee.

Glengarry Glen Ross is back on the stage, 30 years since its debut. Guest host Celeste Headlee and the Barbershop guys talk about whether the story of cutthroat businessmen still rings true today. Plus, as the dust settles, the guys weigh in on which vice presidential candidate threw harder punches during last night's debate.

Ben Affleck's Argo, which is based on the declassified story of the CIA's mission to save six American diplomats trapped in Iran in 1979, is gripping, compelling and, at times, hilarious. But, as critic David Edelstein explains, the best parts of the "true" story are the parts that aren't true at all.

The 2012 Nobel Prize winners were announced this week, and research on stem cells, cloning, cell receptors and quantum optics took center stage. Experts discuss how the work of this year's Nobel laureates changed our understanding of our bodies, and the world around us.

"K-Man," as he's known to locals, lived more than 9,500 years ago in what is now Washington state. Scientists studying his ancient bones say he was all athlete, with a soccer player's leg muscles and a killer arm that might fit right in among today's major league players.

The historic move could result in the break up of the United Kingdom.