LINKS: http://www.twitter.com/tweetsauce http://facebook.com/VsauceGaming music by: http://www.youtube.com/JakeChudnow Sound localization: http://www.diracdelta.co.uk/science/source/d/u/duplex%20theory%20of%20localization/source.html Depth perception: http://nathanclarkecommunication.wikispaces.com/Depth+perception Why do we have two nostrils instead of one? http://bit.ly/QXHsLZ http://news.stanford.edu/news/1999/november10/smell-1110.html What does space smell like?