Lost Worlds

One of mankind’s goals for the 21st century is to boldly go where no one has gone before. More specifically, our sister planet Mars. But to prepare our brave new class of astronauts for what they might encounter in that challenging environment and how to look for signs of life, historically or presently, scientists are studying previously unexplored regions of earth. One of them is Dr. Brian Hynek of the University of Colorado at Boulder. He joins host Steve Fisher to share his experiences.