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Global Warming

More About Global Warming
Photo: Dust and ozone—from urban areas such as Fresno—create problems for agriculture in California's Central Valley

Effects

A changed world.

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Photo: Brent oil field, North Sea, UK

Causes

What happened?

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Photo: The sun reflects off the Caribbean Sea through scattered puffy clouds into the atmosphere

Solutions

What can we do?

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Photo: Ecotourists in an inflatable boat explore tall icebergs

The Science

What is global warming?

Get the Facts
Photo: Like giant pinwheels, turbines spin at the Middelgrunden Wind Park, Denmark

Alternative Energy

Cleaner ways to power the world.

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Photo: Spruce forest damaged by acid rain, Poland

Other Environmental Threats

Other perils to the environment.

Get the Facts

Did You Know?

The U.S. is responsible for more green house gas pollution than South America, Africa, the Middle East, Japan and Asia – all put together.

More About Environmental Threats

News: Latest Global Warming Stories

Leaves "Magnetized" by Air Pollution, Study Finds
Arctic Largely Ice Free in Summer Within Ten Years?
Stormier Arctic Predicted as Ice Melts
See More Global Warming News
RSS
What Is RSS?
See More Global Warming News

Related Features
Photo: Smokestacks

Video: What If Earth Warms Six Degrees?

Mass extinctions and other nightmare scenarios figure into one expert's speculations on what Earth would be like at 6°C (10.8°F) warmer.

Watch Video
Photo: Trophy

And the Winners Are...

Online voters and a panel of judges have chosen five Green Effect entries as the best Earth-saving ideas. See these extraordinary submissions—and be inspired to create your own Green Effect.

View All Winners
Photo: Wind power

Interactive: Harness the Power of Wind

Engineer your own turbine to harness the power of the breeze, and find out for yourself whether or not the answer to our clean energy problem is blowin' in the wind.

Interactive Turbine

Global Warming Topics

SPECIAL ADVERTISING SECTION
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Photo: 2009 Winner

Photo Contest

Find out who takes home the Grand Prize!

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Order Extreme Ice Now
Photo: The cover of Extreme Ice Now

This stunning collection of photographs illustrates the catastrophic melting of glacial ice.

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Support Conservation
Photo: Two penguins

Help conserve the world's natural resources.

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EarthPulse
Photo: EarthPulse logo

Learn about your world with National Geographic's visual guide to global trends.

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National Geographic Kids

Image: A cross-section of the human head

Play games, watch videos, and much more in this just-for-kids site.

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