For the past four years I’ve been honored to help moderate portions of Google’s annual Zeitgeist conference, which assembles a powerful lineup of speakers each year in the Arizona desert. I hosted the last segment of the day, and sat down with astronaut Mark Kelly, who is known for his career as a fighter pilot and Space Shuttle commander, and of course, as the husband of former Rep. Gabby Giffords. Since Giffords was shot two years ago, and after the terrible Newtown attack, Kelly and Gifford launched Americans for Responsible Solutions, a SuperPAC that is trying to take on the NRA using NRA lobbying tactics. Gabby comes on toward the end and left no one in their seats. Inspirational stuff – one of many such talks at the conference.