Do animals use their two nostrils to locate scents in the same way they use two ears to locate sounds? UC Berkeley neuroscientists set out to test that question, using human volunteers on all fours to track a chocolate scent through the grass. The answer is yes. With streaming video<br><br><a href='http://www.berkeley.edu/news/media/releases/2006/12/18_scents.shtml&#039; target='_blank'>http://www.berkeley.edu/news/media/releases/2006/12/18_scents.shtml&lt;/a&gt;&lt;br&gt;&lt;br>