Listen Loading… 2:57
  • Playlist
  • Download
  • Embed
    Embed <iframe src="http://www.npr.org/player/embed/223425487/225480534" width="100%" height="290" frameborder="0" scrolling="no">

Richard Dawkins, founder of The Richard Dawkins Foundation for Reason and Science, speaks at the March 2012 "Reason Rally" on the National Mall in Washington, D.C. Allison Shelley/Getty Images hide caption

itoggle caption Allison Shelley/Getty Images
Listen Loading… 2:51
  • Playlist
  • Download
  • Embed
    Embed <iframe src="http://www.npr.org/player/embed/222146362/227262421" width="100%" height="290" frameborder="0" scrolling="no">