"Imagine printing a human heart with the click of a button. Sound impossible? Scientists and doctors are getting closer to transplanting human body parts made from 3-D printers. Learn how doctors are using 3-D printers to save lives as you add and subtract fractions"--Provided by publisher.
Bonus program: How to build a beating heart: "Scientists are using tissue engineering to harness the body's natural powers to grow skin, muscle, body parts and vital organs, even hearts." -- video.nationalgeographic.com.
