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What We Know For Sure - Graphics

Published: November 20th, 2009 in Causes, Greenhouse Gases, Trends, United States, West, Flora & Fauna, Energy, Fossil Fuels, States of Change
Originally broadcast on: June 13th, 2008 on

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Keeling Curve

Published: August 25th, 2010 in Causes, Greenhouse Gases, Trends, United States, US National

Charles David Keeling's measurements provided the first significant evidence of increasing atmospheric carbon dioxide concentration in the atmosphere.

News, Blogs & Features

May 23rd, 2012 - A River Runs Through It: Scientists Explain Arctic Mercury
May 23rd, 2012 - Western U.S. Faces ‘Extreme’ Wildfire Risk Now and Later
May 23rd, 2012 - The Issue of Population is More Than a Little Radioactive
May 23rd, 2012 - Image of the Day: The Elephant in the Living Room
May 22nd, 2012 - G-8 Leaders Agree to Cut Short-Lived Greenhouse Gases

Gallery

Nationwide: August Days over 90 Degrees

Present vs. projected August days over 90 degrees Fahrenheit