Linda talks with Michael Wiederhold about animal experiments in space. With the aging process, the function of the human body that controls balance often deteriorates. Michael Wiederhold, a scientist at the University of Texas, is trying to find out why. He is the principal investigator for development of vestibular organs in space and believes that a change in gravity may improve balance. Wiederhold is studying snails and fish on the space shuttle now in orbit to see what implications his results may have for humans.