News From the Field
Carbon Dioxide is the Missing Link to Past Global Climate Changes
June 17, 2010
Carbon dioxide (CO2) is the missing ingredient in explaining the advent of ice ages in the Northern Hemisphere and why those cold epochs have caused changes in the tropics for the past 2.7 million years. In a paper in the journal Science, Brown University geologist Timothy Herbert and others analyzed ocean sediment cores and found a definitive link between ice ages and ocean surface temperatures in the tropics. They believe CO2 explains the link.
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The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2012, its budget was $7.0 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives about 50,000 competitive requests for funding, and makes about 11,500 new funding awards. NSF also awards about $593 million in professional and service contracts yearly.
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