Living Dangerously

The March 2011 earthquake and tsunami in Japan remind us just how dangerous our planet can be. In this podcast, Dr. David Grinspoon, astrobiology curator at the Denver Museum of Nature & Science, discusses our violent Earth, explaining why earthquakes, severe weather, and other aspects of the dynamic environment may be necessary for life to exist. What can other worlds in our solar system — such as Mars, Venus, and Saturn´s moon Titan — teach us about the conditions necessary for life as we know it?