Sight, sound, touch, smell, taste. We interact with the world and navigate through it thanks to our senses. But what if we could add to that repertoire? A British scientist and a small group of enthusiasts are exploring ways to do just that. For more global science stories, visit:http://www.world-science.org/NOVA is produced by WGBH in Boston. National corporate funding for NOVA is provided by The Boeing Company. Major funding for NOVA is provided by David H. Koch, the Corporation for Public Broadcasting, and PBS viewers.