London Bridge has already been rebuilt twice! But what happened to the bridges that came down?
Also, explore a map of the big bang! http://www.bigbangregistry.com
MinutePhysics is on Google+ – http://bit.ly/qzEwc6
And facebook – http://facebook.com/minutephysics
And twitter – @minutephysics
Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!
Music by Nathaniel Schroeder
Thanks to Nima Doroud for contributions and to Perimeter Institute for support.
http://www.perimeterinstitute.ca Created by Henry Reich