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
A spreading oil spill in the Gulf of Mexico threatens shipping, wildlife, fisheries and tourism along the coast. Diane and her guests discuss how the government and the oil industry are responding.
- Rayola Dougher senior economic adviser, American Petroleum Institute
- Michael Tidwell author of "Bayou Farewell" and director of the Chesapeake Climate Action Network.
- Jackie Savitz Pollution Campaign Director, Senior Scientist, Oceana
- Stephen Power reporter, Wall Street Journal
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