An aerial view of New Yorkers taking in the sun on a beach at Coney Island on August 4, 2012 in the Brooklyn borough of New York City. | Mario Tama/Getty Images

Extreme Heat Waves Becoming The Norm

An increase in excessively hot summers over the last 30 years is too extreme to be considered a result of chance, pointing a finger at global warming as the underlying cause.

August 5, 2012
3:00 AM EDT