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Wednesday, April 18, 2012

13.7: Cosmos And Culture

Are We Warming The Planet? That Is The Key Question

A tourist sits at the Old Fortresss in Cartagena, Colombia during sunset on April 14, 2012.

April 18, 2012 Are humans warming the Earth? An enlightening debate touches on most of the issues of one of the central questions of our time

Summary

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