Many of history's greatest discoveries and inventions once looked impossible. It's a good thing that history's most brilliant scientists, inventors and entrepreneurs gave things a second thought. Think Again is a humorous and inspiring look at some of history's most famous innovations and at how some very smart and successful people initially dismissed them as impossible. Sending a man to the moon, the invention of automobiles and airplanes, Pasteur's theory of germs, and even surgery are all featured in this upbeat video that will start any meeting out with a bang.

RT: 4 min.