Time travel is the ultimate fantasy.  We could finally figure out who killed JFK, invest in Apple before the iPod, and warn everyone about how poorly crimped hair will be looked upon in the future.  But sadly, we won't be able to do any of this until we figure out a way to travel faster than the speed of light.

Or will we...

Some of the more imaginative physics minds of our time have posited an alternative theory for time travel.  And no, it doesn't involve Superman flying backwards around the world.  What is this mysterious theory?  And will humans ever be able to use it to overcome our current chronologically-challenged state?  Watch to find out.

_{Host: Brit Trogen}

_{Photo credits: Lykaestria, NASA, R. Alain, Wikimedia users Silly Rabbit, Benji64 and AllenMcC, New Scientist}

_References:

_{http://science.howstuffworks.com/time-travel3.htm}

_{http://prl.aps.org/abstract/PRL/v61/i13/p1446_1}

_{http://vega.org.uk/video/programme/61}

_{http://www.scientificamerican.com/article.cfm?id=the-chronology-protection}