Host Ben Kieffer talks with Peter Smith, professor at the University of Arizona's Lunar and Planetary Laboratory. He was responsible for the $420-million Phoenix Mars Mission, part of NASA's search for elements of life in our solar system. During the five months of operations, the probe conducted science experiments and relayed more than 25,000 pictures of the Red Planet. Then, he talks with University of Iowa Physics Professor Craig Kletzing about the NASA mission he is leading to learn more about space weather. Radiation Belt Storm Probes is scheduled to launch in March 2012.