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A worldwide investigation
• Brazil: Deforestation in the rainforest
• Carteret Islands: Changing tides • Central Africa: Water loss in Lake Chad • China: Air pollution a major problem • Greenland: How fast is the ice melting? • Madagascar: Biodiversity off the African coast • Southeast Asia: Animal sanctuary in Cambodia • Alaska: Tracking polar bears in the Arctic • Yellowstone National Park: Reintroducing gray wolves  |
About the show
In 2007, CNN took viewers around the world in "Planet in Peril," a four-hour documentary that examined our changing planet. This year, the worldwide investigation continues weekly on Anderson Cooper 360, culminating in a new special program in the fall, "Planet in Peril: Battle Lines," hosted by CNN's Anderson Cooper, chief medical correspondent Dr. Sanjay Gupta and National Geographic host and "The Oprah Winfrey Show" correspondent Lisa Ling.
• Get the show:  • Available in U.S. stores now Whale protection delays
For Educators
Use these in-depth research activities and videos to help students understand the issues facing our planet. Want more free educator materials? Go to CNN Student News• Activities: Planet in Peril | Climate change | Deforestation | Species loss | Overpopulation | Quiz | Questions • Videos: Global warming | Deforestation | Species loss | Overpopulation 
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