Changes in climate are already underway across the United States, affecting the its economy, cities and coasts. Watch the videos to find out more about the threats facing the nation.
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How does climate change affect U.S. security?
What climate change impacts are military leaders, experts and scientists most concerned about? Find out what over a dozen experts say about the issue.
Bases at Risk
The 2010 Quadrennial Defense Review cites 30 U.S. military installations as being at risk from sea level rise. Take a look at how the Department of Defense is addressing the issue at a few of its major coastal installations.
Solve this global crisis
Think you have what it takes to respond to storms in the Gulf Coast, melting in the Arctic, drought in Africa and floods in Bangladesh? Take our quiz.
Climate change through the years
See how defense policy has coevolved with scientific developments, extreme weather events and domestic and international policy.
A complex climate threat
The U.S. intelligence community is laboring to understand how the vast array of changes being brought on by climbing global temperatures will affect American interests at home and abroad.