Earth's Temperature Tracker
After tracking Earth temperature for decades, NASA scientist James Hansen is confident the global warming trend observed since 1880 is mainly the result of human-produced greenhouse gases. (Nov. '07)
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Study the Past, Predict the Future
Scientists use the theories they have constructed to explain the paleoclimate data record to understand modern climate and to predict how we can expect it to change in coming years or decades. (Nov. '06)
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Methane: Climate Super-Star
In 30 years, our knowledge of methane has traveled from obscure trace gas to important greenhouse forcing, both natural and anthropogenic. What caused this change, and what role has methane played in climate, both in the past and future? (Sep. '04)
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Atmospheric Tango
Ozone affects climate, and climate affects ozone. Temperature, humidity, winds, and the presence of other chemicals in the atmosphere influence ozone formation, and the presence of ozone, in turn, affects those atmospheric constituents. (Feb. '04)
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Nov. 2001: Global Warming in the 21st Century: An Alternative Scenario

May 2001: Forcing Agents Underlying Climate Change

Aug. 1997: Clouds in Midlatitude Storms

Apr. 1997: The Climate of the Pliocene: Simulating Earth's Last Great Warm Period