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Past Change.

Subjects: CLIMATE change; VEGETATION & climate; CLIMATOLOGY

• Source: National Geographic. Sep2004, Vol. 206 Issue 3, p64-65. 2p. 4 Diagrams, 1 Graph.

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Now What?

Subjects: CLIMATE change; CLIMATOLOGY; GLOBAL temperature changesGREENLAND

• Source: National Geographic; Sep2004, Vol. 206 Issue 3, p56-75, 17p, 13 Color Photographs

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When Life Nearly Came to an End.

• Authors : Hoffmann, Hillel J.

Subjects: PERMIAN stratigraphic geology; BIOLOGICAL extinction; ENVIRONMENTAL degradation

• Source: National Geographic; Sep2000, Vol. 198 Issue 3, p100, 14p, 11 Color Photographs, 1 Diagram, 1 Map

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Now what? What do you get when you compare hundreds of thousands of years of climate data from glaciers, caves, and coral reefs with climate projections modeled by the world's most powerful supercomputers? Factor in a heavy dose of greenhouse gases, and you get a harrowing forecast

• Authors : Morell, Virginia

• Source: National Geographic. Sept, 2004, Vol. 206 Issue 3, p56, 20 p.

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