Real Clear Science - August 3, 2012 by George Dvorsky
Part of the joy of science fiction is seeing all the awesome toys, and imagining how they could exist in the real world. And so many of science fiction's coolest gadgets have come true, including Star Trek's PADDs and communicators. But the sad truth is, a lot of the most fantastic technologies in science fiction are fantastic for a reason — they can't ever exist in reality. Here are 10 amazing technologies that will never exist in real life.