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
The senator shares his views on the process and art of decision making as well as the progress of his presidential campaign. He also describes the great decisions and extraordinary people profiled in his latest book, written with his long-time staff member, Mark Salter.
- Sen. John McCain R-Arizona, was first elected to the Senate in 1986.
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