Before there was life on Earth, there was something called "the period of maximum bombardment" when comets, meteors and other space objects crashed into the planet. Some of those carried materials necessary for life to emerge. Dr. Nir Goldman of Lawrence Livermore has been using computer simulations to investigate the hypothesis that some of these collisions synthesized the building blocks of life. He spoke at a "town talk" sponsored by Telluride Science. Moderators: award-w...