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
An update on the largest military campaign of the eight year war in Afghanistan as U.S., Nato and Afghan forces try to rout the Taliban from its southern stronghold
- David Sanger chief Washington correspondent for "The New York Times," author of "The Inheritance: The World Obama Confronts and the Challenges to American Power."
- Amb. Zalmay Khalilzad former U.S. Ambassador to Afghanistan, counselor at the Center for Strategic and International Studies (CSIS) and president of Khalilzad Associates
- Rod Nordland reporter, New York Times
- Amb. Karl Inderfurth former assistant secretary of state for south Asian affairs; professor and graduate program director at George Washington University's Elliott School of International Affairs
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