When it comes to environmental issues, there can be a lot of conflicting reports, numbers and stances. But acclaimed writer Elizabeth Kolbert cuts through the competing rhetoric and political agendas to elucidate for Americans what is really going on with the global environment and asks what, if anything, can be done to save our planet. She travels around the world - to Alaska, Greenland, the Netherlands - where climate change is affecting the environment in significant ways. Rising sea levels, thawing permafrost and changes in migratory patterns. Are these isolated incidents, or do they paint a bigger picture?