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Clean Tornado Debris

Photo: Man helps clean debris on roof of house that was destroyed by tornado
A man searches through the tattered remains of this Midwest City, Oklahoma, home after an F5 tornado roared through. The 1999 twister, which packed winds over 250 miles (402 kilometers) per hour, killed dozens, injured hundreds, and caused millions of dollars in property damage.
Photograph by Hector Mata/AFP/Getty Images

Earth Topics

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Photo: People hiking at sunset

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Land Rover in winter

Photo Gallery

Traverse the jungle and scale the dunes.

Forces of Nature

Photo: A volcano erupting

Guide to the most powerful forces on Earth: earthquakes, volcanoes, hurricanes, and tornadoes.

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.

Join the Geotourism Challenge

Image: The Geotourism Challenge

Honor people and organizations that are innovators in geotourism.