Years of Living Dangerously

Harrison Ford travels to Indonesia to investigate how the world's appetite for palm oil - an ingredient in everything from candy bars to laundry detergent - has led to massive deforestation and turned that country into one of the world's largest emitters of greenhouse gases. Don Cheadle visits Plainview, TX where a community once reliant on a meat-packing plant for its livelihood is looking for answers after its closure. Pulitzer Prize-winner Thomas Friedman embarks on his first of three Middle Eastern trips to examine how climate change can be a stress point in a volatile political situation and push it over the edge. His first stop: Syria.

Harrison Ford continues his investigation into the global effects of the palm oil industry and further explores the corruption that has ravaged the Indonesian landscape. Arnold Schwarzenegger joins an elite team of wild-land firefighters - known as the "Hot Shots" - as they battle a new breed of forest fires, one made more deadly by climate change.

Matt Damon takes viewers on an investigation into the impact of extreme heat on human health and mortality. Michael C. Hall journeys to the low-lying deltaic country of Bangladesh where rising seas are expected to submerge 17% of the nation. Hall explores the prediction that by 2050, the migration of upwards of 150 million people worldwide will be the single most worrisome impact of our climate-changed future. Thomas Friedman concludes his investigation of three Middle Eastern nations - Syria, Egypt, and now Yemen - to witness how climate change can be a stressor that can take a volatile political situation and push it over the edge.

Michael C. Hall concludes his journey to Bangladesh. M. Sanjayan returns to further address and question some of the top climate scientists in their fields as they collect key data unlocking the past and future of our planet's changing climate. His destination: Tupungatito, the northernmost historically active stratovolcano in the southern Andes. Thomas Friedman concludes the first season in the White House with an on-the-record discussion of global climate change with President Barack Obama.

MSNBC's Chris Hayes shadows climate change denier, Republican Congressman Michael Grimm for a year in Staten Island in the wake of Superstorm Sandy and questions what he might have learned about climate change. M. Sanjayan travels to Christmas Island to question some of the world's top climate scientists as they collect key data unlocking the past and future of our planet's changing climate.

Lesley Stahl travels to Greenland to investigate the effects of global warming in the Arctic. Ian Somerhalder travels to North Carolina to listen in on both sides of the evangelical community's debate over climate change. Somerhalder finds himself entrenched in the middle of not only a religious debate, but a familial one. The father: a megachurch preacher who doesn't believe in climate change. The daughter: an activist trying to shut down the local coal-fired power plant.

Olivia Munn profiles the nation's most climate-conscious governor - Jay Inslee of Washington State - and together they discuss the issues he's faced since being elected. New York Times columnist Mark Bittman probes New Jersey Governor Chris Christie's evasion of the topic of man-made climate change during the rebuilding of his state's coastline post-Superstorm Sandy.

Jessica Alba meets three members of Climate Corps - an innovative MBA-focused program developed by The Environmental Defense Fund - as they try to convince America's top corporations that sustainability can actually boost their bottom lines. Thomas Friedman finds himself in Egypt to explore how what happens in the wheat fields of Kansas plays out on the volatile streets of Cairo. Chris Hayes returns to reveal an intimate story about life after Superstorm Sandy, with the most economically vulnerable trying to survive the impacts of climate change.

America Ferrera profiles prominent climate skeptic James Taylor of the Heartland Institute as he crusades against clean energy, and investigates the battle over the future of renewable energy in the US. Mark Bittman returns to conduct a yearlong investigation into natural gas, which has been touted as "America's energy source" and a way towards a cleaner, greener future. Is it true?