A Worldwide Investigation
Massive Antarctic ice shelf on verge of collapse
Study: Global warming threatens forests
Anderson Cooper free dives with great white sharks | Photos
World's most valuable resource, a curse for most Nigerians
Drought parches much of the U.S., may get worse
Commentary: Good planets are hard to find
Shark fin soup alters an ecosystem
Lisa Ling visits ground zero in fight to save sharks Video
Commentary: Only China can save our sharks
History of environmental movement full of twists, turns
Tracking deadly zoonotic viruses spread from animals to humans
Commentary: What unites James Bond and dead monkeys?
Behind the scenes with Anderson Cooper, Dr. Sanjay Gupta and Lisa Ling Video
Making of 'Battle Lines': Planet in Peril producers have monkeypox scare Video
Save the planet: Go green with these tips for home, work and travel
PopSci: Five looming eco-disasters
Scientific American: Global food crisis
Oprah.com: 11 things you can do now to save the planet
PopSci: Five ways you're killing the planet
Oprah.com: Eight simple ideas to save energy
Scientific American: Eating Africa's forest wildlife to extinction
Scientific American: Solutions for sustainable environmental progress
Latest headlines: More Planet in Peril news
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About the show
"Planet in Peril: Battle Lines" examines the environmental conflicts between growing populations and natural resources. A worldwide investigation and two-hour documentary, hosted by Anderson Cooper, chief medical correspondent Dr. Sanjay Gupta and "The Oprah Winfrey Show" correspondent and National Geographic host Lisa Ling.

• The investigation continues at "Planet in Peril"

Send your questions and comments to "Planet in Peril"

• Revisit the award-winning 2007 documentary.

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Video Podcast
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For Parents & Educators
Use these in-depth research activities and guides to help young people understand the issues facing the planet.

Learning activity
Pre-viewing questions
Post-viewing discussion questions
Video explainers: Zoonotic Diseases | Ecotourism