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Explaining crocodiles in Wyoming

Fifty million years ago, the Cowboy State was crawling with crocodiles. Fossil records show that crocs lounged in the shade of palm trees from southwestern Wyoming to southern Canada during the Cretaceous and Eocene.  Exactly ...

dateSep 02, 2015 in Earth Sciences
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China air pollution levels fall: Greenpeace

Air pollution levels in China's cities improved in the first six months of this year, environmental campaign group Greenpeace said Wednesday, but remained far worse than global and domestic standards.

dateJul 22, 2015 in Environment
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