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BARROW, AK - JUNE 07: Inupiat eskimo children play along the banks of the frozen Arctic Ocean June 7, 2006 in Browerville, Alaska. Scientists continue to study changes in the Earth's climate which many attribute to the emission of greenhouse gases. (Photo by Justin Sullivan/Getty Images)

BARROW, AK - JUNE 07:  Inupiat eskimo children play along the banks of the frozen Arctic Ocean June 7, 2006 in Browerville, Alaska. Scientists continue to study changes in the Earth's climate which many attribute to the emission of greenhouse gases.  (Photo by Justin Sullivan/Getty Images)