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Winter Wheat, Colorado

Photo: Rows of winter wheat, Colorado
Rows of winter wheat wind their way to the Colorado horizon. Because North American grasslands have such fertile soil, most of the natural landscape has been converted to farmland.
Photograph by Richard Olsenius

Earth Topics

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Photo: Reflection on Yellowstone Lake, Yellowstone National Park

Photo Contest

Share your shots and you could win a trip to the Grand Canyon!

Photo: Puerto Escondido

Interactive Map

Visit Mexico with this interactive map.

Six Degrees Book and DVD

Image: Six Degrees DVD and book

Get an eye-opening warning of the dangers of climate change, one degree at a time.

Support Conservation

Photo: Two penguins

Help conserve the world's natural resources.