Saturday, April 21, 2012, 8:00-9:30 p.m. ETCheck your local listings
JOURNEY TO PLANET EARTH is television's only continuing science and nature series focusing on the environment. Academy award-winner Matt Damon hosts.
JOURNEY TO PLANET EARTH “Plan B: Mobilizing to Save Civilization” promo. Premieres Mar. 30, 2011, 10-11:30 p.m. ET.Watch