World leaders react to a historic shift in U.S. policy toward Cuba. Pakistan buries victims of a school massacre by the Taliban. And U.S. officials say North Korea is behind the hacking of Sony Pictures. A panel of journalists joins Diane for analysis of the week's top international news stories.
Guest Host: Susan Page
A recently released study shows new evidence that Mars may have supported life at one time. Two scientists talk about recent findings in astrobiology, a discipline that brings together astronomy, biology, geology, genomics, ecology, chemistry, zoology, and paleontology.
- Baruch Blumberg director of the NASA Institute of Astrobiology
- Richard Berendzen professor of physics at American University
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A panel of journalists joins Diane for analysis of the week's top national news stories.
Bioengineers are creating human body parts to replace organs and manage life-threatening diseases. How techniques like 3-D printing and stem cell research are driving medical advances and raising ethical questions
Cuba releases American contractor Alan Gross after five years' imprisonment on espionage charges. The U.S. releases several Cubans in exchange. Details on the prisoner swap and the future of U.S.-Cuban relations.