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 look at the successes and failures of the Bush administraton’s environmental record.
- Peter Lehner Executive Director, The Natural Resources Defense Council.
- Bill Kovacs vice president for environmental policy at the U.S. Chamber of Commerce
- James Connaughton Executive Vice President for Corporate Affairs of Public and Environmental Policy for Constellation Energy. He was former chair of the White House Council on Environmental Quality.
- Margaret Kriz Hobson energy and environment correspondent, National Journal
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