How to Become an Expert Tightrope Walker...
Tightrope walkers seem to have that extra something that normal people don't have, even besides bravery. Then again, those who have the bravery and the will can learn the skill. Researchers have composed a mathematical m...
http://www.neatorama.com/2012/04/20/how-to-become-an-expert-tightrope-walker/
