How far would you go to find something that's just out of reach, or maybe not even real? TED speakers tell stories about searching for elusive sea creatures and distant aliens.
Seth Shostak, a senior astronomer at the the SETI Institute, explains why we should search for ET. A specialist in bioluminescence, Edith Widder shares how innovative technology helped her capture a giant squid on video for the first time. Dan Barber, the chef at New York's Blue Hill restaurant and Blue Hill at Stone Barns, chronicles his search for a fish that would please both diners and environmentalists. And humorist John Hodgman tells a story about aliens, physics, time, space and the way they all contribute to a sweet, perfect memory of falling in love.
Learn more or listen again to this week's episode.