PLANET EARTH

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Switzerland's Aletsch glacier
Goodbye, glaciers. These rivers of ice are melting worldwide.
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Prehistoric coastline
Earth's mantle morphs East Coast's ancient shoreline.
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weather, tornadoes, Texas fatal tornado
A tornado reaching up to a mile wide at times left at least six dead Wednesday in Hood and Johnson counties, Texas.
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Tornado over Millsap, Texas
The tornado caused less damage than others in nearby towns.
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wildebeest-serengeti-migration-100901-02
Scientist Richard Leakey said the road could allow safe passage of wildlife.
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An image of the Lake Erie algae bloom acquired by NASA's Aqua satellite on October 9, 2011.
Can algal blooms be stopped with better farming?
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