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"
Revisit the award-winning
2007 documentary
Send your questions and comments to "Planet in Peril"