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Environmental Threats

Photo: Spruce forest damaged by acid rain, Poland

Acid Rain

Effects felt through the food chain.

Photo: Destroyed rain forest in Rondonia State, Brazil


What's happening to our trees?

Photo: Clouds over a Wyoming prairie

Ozone Depletion

Losing Earth's protective layer.

Photo: Sunlight filters through smoke

Air Pollution

Harming our atmosphere.

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

Toxic Waste

Man's poisonous byproducts.

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.

Related Features

Photo: Cod caught in a net

Photo Gallery: Overfishing

Learn how our appetite may be destroying entire species of fish, shrimp, mollusks, marine turtles, and more, in this eye-opening gallery on overfishing.

Photo: Indian Himalayas

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.

Photo: Windmill and wildflowers

Video: State of the Earth—Final Report

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

Global Warming Topics


Photo: Montana

Enter Sweepstakes

Take a photographic journey through Montana and enter to win a trip!

Photo: 2009 Winner

Photo Contest

Find out who takes home the Grand Prize!

National Geographic's Green Book Shop

Image: Cover of the book title True Green

Help take care of the environment with our new collection of green books!

Support Conservation

Photo: Two penguins

Help conserve the world's natural resources.

National Geographic Kids

Image: A cross-section of the human head

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