Acting as the planet's air conditioner, the rainforest sucks up millions of tons of greenhouse gases and stores them safely out of the atmosphere. South America's deforestation threatens to unleash a kind of "carbon bomb" that will add to our already deteriorating climate difficulties. As he travels across Peru and Brazil, recognized South America expert Nikolas Kozloff talks to locals, scientists and activists about the rainforest and what should be done to avert its collapse. Drawing on his expertise of South American politics, Kozloff argues that cooperation between the world's countries is essential in turning back the tide of climate change and that the fate of the planet depends on our response to environmental problems within the southern hemisphere.