Climatologist Stephen Schneider on Global Warming.

Discussions of global warming and climate change often center around anecdote and cyclical analysis. Scientist Tim Flannery seeks to clarify current — and future — conditions in The Weather Makers: How Man is Changing the Climate and What it Means for Life on Earth.

Environmentalist Michael Oppenheimer says that rising temperatures could cause international crises like wildfires and food shortages. He has a new book about ways to curtail this trend on the individual, corporate, and governmental levels, called Dead Heat.

Journalist Chloe Sorvino says the meat industry pollutes the environment, contributes to climate change and leaves the meat supply chain vulnerable to major disruptions.