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
Diane talks with her guests about the environmental, safety, energy security, and labor issues revolving around a controversial proposal to require American vehicles to average 35 miles per gallon by 2013.
- Dan Lashof senior scientist, Natural Resources Defense Council
- William Niskanen chairman of the Cato Institute and former acting chairman of President Reagan's Council of Economic Advisers
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