Climate Change

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Frozen in Time

Glaciers in the Pacific Northwest have recorded hundreds of years of climate history, helping researchers plot how quickly the planet is warming

A stone statue of Hatshepsut

Climate Change

Time often shapes perceptions

Building Sustainable Cities

The 227-city U.S. Mayors Climate Protection Agreement is just the beginning.

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Al Gore Discusses "An Inconvenient Truth"

Environmentalist Al Gore talks about his new movie

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Heavenly Harbingers

High altitude, night-shining clouds are becoming more common, which could signal climate changes

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When Permafrost Isn't

Slowly rising temperatures are melting the frozen ground that underlies most land at high latitudes

A Census of the Wild

A government report takes a look at what we have left and where we are heading

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Climate Is Often a Matter of Inches and a Little Water

Planners ignore microclimates at their peril: mistakes can mean frozen crops, lower house values and camper vans blown off the highway

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Phenomena, Comment & Notes

Iceberg armadas and flickering climates: how one good idea led to more, and we appreciated anew the world's complexity

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