The next frontier in 3-D printing: Human organs

The emerging process of 3-D printing, which uses computer-created digital models to create real-world objects, has produced everything from toys to jewelry to food.

Soon, however, 3-D printers may be spitting out something far more complex, and controversial: human organs.

Pee here to find out if you have cancer

An MIT team has developed a paper stick that could someday be used as an inexpensive and accurate way to detect a range of cancers. It holds particular promise for the developing world.