How has the aerodyamics of cycling changed over the years? Listen as former cyclist Lance Armstrong tells Neil deGrasse Tyson about how new technology has changed the way cyclists compete in the Tour de France. If you like this StarTalk SoundBite, be sure to listen to the full Playing With Science episode "The Physics of the Tour de France" at https://soundcloud.com/startalk_playing-with-science/the-physics-of-the-tour-de