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Environmental Threats

Photo: Spruce forest damaged by acid rain, Poland

Acid Rain

Effects felt through the food chain.

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Photo: Destroyed rain forest in Rondonia State, Brazil

Deforestation

What's happening to our trees?

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Photo: Clouds over a Wyoming prairie

Ozone Depletion

Losing Earth's protective layer.

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Photo: Sunlight filters through smoke

Air Pollution

Harming our atmosphere.

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Photo: Turbine protesters spray paint graffiti on the new foundation of a turbine

Toxic Waste

Man's poisonous byproducts.

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More About Environmental Threats

Did You Know?

Almost all of the 300 large glaciers worldwide are shrinking, according to a study published in the October 2006 issue of Geophysical Research Letters.

More About the Environment

News: Latest Global Warming Stories

North America's Cooling Due to Natural Causes in 2008?
Giant Carbon "Vault" Proposed Near New York City
Melting Glaciers Nourishing Oceans With Ancient Carbon
See More Global Warming News
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Interactive: The Greenhouse Effect

It's one thing to know that excessive carbon emissions are bad. It's another thing to understand why. Get a hands-on tutorial of the inner workings of the greenhouse effect.

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Video: State of the Earth—Final Report

See our effect on air, land, water, and wildlife.

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Global Warming Topics

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