Earth Science

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Green Sahara May Have Provided Route out of Africa for Early Humans

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Ten Science Stories You Should Have Read

My ten favorite Smithsonian science and nature stories from the past year

Polar Bear at Cape Churchill (Wapusk National Park, Manitoba, Canada)

It's Not Too Late to Save the Polar Bear

In 2007, scientists from the USGS said that if humans didn't cut greenhouse gas emissions, two-thirds of the world's polar bears could be gone by 2050

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Biodiversity Losses Could Be Bad for Your Health

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Spilled Paint or Iranian Desert?

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Rare Earth Elements Not Rare, Just Playing Hard to Get

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Peak Oil: Is It Time to Worry?

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Ten Natural Products That Kill

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Looking for New Discoveries in Old Data

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Did Broken Buoys Fail to Warn Victims of the Mentawai Tsunami?

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Why Climate Change Brings Both More and Less Water

A fossil collector since childhood, Bob Hazen has come up with new scenarios for life's beginnings on earth billions of years ago.

The Origins of Life

A mineralogist believes he's discovered how life's early building blocks connected four billion years ago

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Colorado River One of Many Imperiled Waterways

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Water Conservation at the Smithsonian Institution

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The Tornado That Saved Washington

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Searching for Bad Poetry About Geology

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The Problem with Space Junk

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More Heat Waves on the Horizon

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Italian Scientists May Face Trial for Not Predicting 2009 Earthquake

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A Map of Earth's Gravity

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