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Harrison Ford goes to NASA and learns how hot the United States is expected to get by 2100.

Harrison Ford goes to NASA and learns how hot the United States is expected to get by 2100.

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James Cameron, Jerry Weintraub and Arnold Schwarzenegger weigh in on why they care about climate change and their motivation for making this series.

James Cameron, Jerry Weintraub and Arnold Schwarzenegger weigh in on why they care about climate change and their motivation for making this series.

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Michael C. Hall investigates the impact of rising sea levels on a community of women living and working on a shrinking island.

Michael C. Hall investigates the impact of rising sea levels on a community of women living and working on a shrinking island.

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Sanjayan visits the CO measuring station in Mauna Loa, Hawaii and learns the shocking truth.

Sanjayan visits the CO measuring station in Mauna Loa, Hawaii and learns the shocking truth.

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Michael C. Hall speaks about why he cares about climate change.

Michael C. Hall speaks about why he cares about climate change.

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Michael C. Hall gets a hands on lesson in navigating the ins and outs of navigating Dhaka.

Michael C. Hall gets a hands on lesson in navigating the ins and outs of navigating Dhaka.

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Matt Damon on why he cares about climate change and how he got involved with YEARS of LIVING DANGEROUSLY.

Matt Damon on why he cares about climate change and how he got involved with YEARS of LIVING DANGEROUSLY.

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Matt Damon talks with Rupa Basu about her research into heat waves and vulnerable populations and just how bad things could get for the next generation.

Matt Damon talks with Rupa Basu about her research into heat waves and vulnerable populations and just how bad things could get for the next generation.

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Jessica Alba talks about her commitment to sustainability.

Jessica Alba talks about her commitment to sustainability.

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Chris Hayes and Lisa Jackson take a walk through Far Rockaway discussing the economics of the neighborhood and how storms are worse for the have-nots. They meet Congressman Gregory Meeks at a diner to discuss further.

Chris Hayes and Lisa Jackson take a walk through Far Rockaway discussing the economics of the neighborhood and how storms are worse for the have-nots. They meet Congressman Gregory Meeks at a diner to discuss further.

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Mark Bittman talks about why he cares about climate change and his experience reporting for YEARS of LIVING DANGEROUSLY.

Mark Bittman talks about why he cares about climate change and his experience reporting for YEARS of LIVING DANGEROUSLY.

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Producers behind the scenes in Vernal, Colorado.

Producers behind the scenes in Vernal, Colorado.

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America Ferrera sits down with Jigar Shah to discuss the rise of renewables in the U.S.

America Ferrera sits down with Jigar Shah to discuss the rise of renewables in the U.S.

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Rex Parris takes America on a tour of Lancaster, CA – the first town powered by solar energy.

Rex Parris takes America on a tour of Lancaster, CA – the first town powered by solar energy.

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James Taylor and Bob Inglis debate the merits of a carbon tax at the R Institute.

James Taylor and Bob Inglis debate the merits of a carbon tax at the R Institute.

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Mark Bittman examines Governor Christie’s ties to Americans for Prosperity and the Koch brothers.

Mark Bittman examines Governor Christie’s ties to Americans for Prosperity and the Koch brothers.

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Superstorm Sandy destroyed Gigi’s restaurant, but she finds a new way to bring comfort to her neighbors by joining the recovery effort.

Superstorm Sandy destroyed Gigi’s restaurant, but she finds a new way to bring comfort to her neighbors by joining the recovery effort.

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Gigi’s owns a waterfront restaurant is destroyed by Hurricane Sandy and must be completely rebuilt, but she lacks the funds to do so.

Gigi’s owns a waterfront restaurant is destroyed by Hurricane Sandy and must be completely rebuilt, but she lacks the funds to do so.

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Pete, a local fisherman in Puget Sound, discusses his family-owned fishing business and the threat to his livelihood that ocean acidification poses.

Pete, a local fisherman in Puget Sound, discusses his family-owned fishing business and the threat to his livelihood that ocean acidification poses.

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Chris Hayes and former McCain campaign manager and conservative Republican strategist Steve Schmidt discuss why the Republican party changed its stance on climate change in recent years.

Chris Hayes and former McCain campaign manager and conservative Republican strategist Steve Schmidt discuss why the Republican party changed its stance on climate change in recent years.

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Anna Jane joins a Sierra Club protest of the keystone XL pipeline at the White House. But in doing so she risks arrest.

Anna Jane joins a Sierra Club protest of the keystone XL pipeline at the White House. But in doing so she risks arrest.

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Bob Inglis and a group of young Republicans go knocking on doors to get signatures in Paul Ryan’s home district to get support for action on climate change.

Bob Inglis and a group of young Republicans go knocking on doors to get signatures in Paul Ryan’s home district to get support for action on climate change.

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Ian Somerhalder talks about why he cares about climate change and why he’s involved in YEARS of LIVING DANGEROUSLY.

Ian Somerhalder talks about why he cares about climate change and why he’s involved in YEARS of LIVING DANGEROUSLY.

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Conservationist M. Sanjayan travels to Christmas Island to interview some of the world’s top climate scientists as they collect key data unlocking the future of our planet’s changing climate.

Conservationist M. Sanjayan travels to Christmas Island to interview some of the world’s top climate scientists as they collect key data unlocking the future of our planet’s changing climate.

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60 Minutes’ Lesley Stahl travels to Greenland to investigate the effects of global warming in the Arctic.

60 Minutes’ Lesley Stahl travels to Greenland to investigate the effects of global warming in the Arctic.

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Pat Dresch shares the story of how she met her husband over a ham radio and talks about the life they built on Staten Island in an interview with Chris Hayes.

Pat Dresch shares the story of how she met her husband over a ham radio and talks about the life they built on Staten Island in an interview with Chris Hayes.

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Staten Island firefighters talk about their experience the night Hurricane Sandy hit New York.

Staten Island firefighters talk about their experience the night Hurricane Sandy hit New York.

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Harrison Ford visits Michael Stuewe of the World Wildlife Fund and Rebecca Moore of Google Earth to find out what effect his visit to Indonesia has had on the protection of tropical forest land.

Harrison Ford visits Michael Stuewe of the World Wildlife Fund and Rebecca Moore of Google Earth to find out what effect his visit to Indonesia has had on the protection of tropical forest land.

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Harrison Ford visits an island refuge for 1200 animals whose homes have been destroyed by deforestation.

Harrison Ford visits an island refuge for 1200 animals whose homes have been destroyed by deforestation.

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Arnold Schwarzenegger talks about why he cares about climate change and explains his worldwide crusade to make an impact.

Arnold Schwarzenegger talks about why he cares about climate change and explains his worldwide crusade to make an impact.

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Arnold Schwarzenegger spends a day with the Snake River Hot Shots as they create a perimeter and clear any fuel that could cause the wildfire to spread.

Arnold Schwarzenegger spends a day with the Snake River Hot Shots as they create a perimeter and clear any fuel that could cause the wildfire to spread.

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Watch all of episode 1 from the first season of Years Of Living Dangerously

Watch all of episode 1 from the first season of Years Of Living Dangerously

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Don Cheadle talks to Katharine Hayhoe, an Evangelical climate scientist, about how she reconciles faith and science and how to speak about climate change with people of faith.

Don Cheadle talks to Katharine Hayhoe, an Evangelical climate scientist, about how she reconciles faith and science and how to speak about climate change with people of faith.

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Thomas Friedman talks about why he cares about climate change and what he’s seen while working on YEARS of LIVING DANGEROUSLY.

Thomas Friedman talks about why he cares about climate change and what he’s seen while working on YEARS of LIVING DANGEROUSLY.

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Harrison Ford talks about why he cares about climate change and why he got involved in YEARS of LIVING DANGEROUSLY.

Harrison Ford talks about why he cares about climate change and why he got involved in YEARS of LIVING DANGEROUSLY.

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Forest Policy Advisor Steve Rhee explains the contentious, sometimes violent interactions between native groups and agricultural companies, as the tropical forest is turned into plantations.

Forest Policy Advisor Steve Rhee explains the contentious, sometimes violent interactions between native groups and agricultural companies, as the tropical forest is turned into plantations.

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Don Cheadle talks about why he cares about climate change and what he’s seen while working on YEARS of LIVING DANGEROUSLY.

Don Cheadle talks about why he cares about climate change and what he’s seen while working on YEARS of LIVING DANGEROUSLY.

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Harrison Ford learns the A B C’s of climate change behind the scenes for YEARS of LIVING DANGEROUSLY.

Harrison Ford learns the A B C’s of climate change behind the scenes for YEARS of LIVING DANGEROUSLY.