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
Guest Host: Susan Page
Depending on whom you ask, America’s "heroes" include just about anyone, from Martin Luther King, Superman and Thomas Jefferson, to Michael Jordan, Madonna, and New York City firefighters. Peter Gibbon discusses his book on America’s heroic ideals, and talks about how the meaning of heroism has changed over the years.
- Dr. Peter Gibbon author and research associate in the Graduate School of Education at Harvard University
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