A Tale of Two Planets

As infant planets, Earth and Venus were almost twins, but today they are incredibly different worlds. What events led to their divergence and the development of radically different environments? | http://science.discovery.com/tv-shows/how-the-universe-works/ Catch new episodes of HOW THE UNIVERSE WORKS Tuesdays at 10/9c on Science! Watch full episodes: http://bit.ly/HTUWFullEpisodes Subscribe to Science Channel: http://www.youtube.com/subscription_center?add_user=sciencechannel Check out SCI2 for infinitely awesome science videos. Every day. http://bit.ly/SCI2YT Download the TestTube app: http://testu.be/1ndmmMq