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
Teacher and historian Joy Hakim presents her popular American history textbooks — the "A History of US" series. She tells how she developed the books, and talks about the upcoming "PBS" series based on them.
- Joy Hakim author, teacher, and historian
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