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Dinosaurs and Dust

Climatic effects of the impact and volcanism scenarios for the extinction of dinosaurs are investigated…

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Stasis Is Not Evolution

A Cambrian fossil worm shows only minor differences from species still living, an example of family stasis.

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Darwin’s Cost

Species may undergo minor adaptation through Darwinian processes, but this comes at the cost of genetic…

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Carved in Stone
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Widespread deposits

What is unusual about widespread sedimentary deposits and other features of the sedimentary…

Radiometric Dating

Learn more about why radiometric dating is generally considered a reliable method for determining…

Merry Christmas from the Moon

On Dec. 24, 1968, Frank Borman, James Lovell, and William Anders--the crew of Apollo 8--orbited…

Sydney Rainforest
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