By Alex Morales
Feb. 26 (Bloomberg) -- Atmospheric levels of carbon dioxide are at their highest in 820,000 years, scientists examining a 3- kilometer (2-mile) ice core from Antarctica have found.
Carbon dioxide acts to warm the Earth by trapping the sun's energy. The United Nations Intergovernmental Panel on Climate Change on Feb. 2 said man-made emissions of greenhouse gases like CO2 are very likely causing global warming, and warned that average temperatures may rise by as much as 6.4 degrees Celsius (11.5 Fahrenheit), and sea-levels by 59 centimeters (23 inches) by 2100.
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Carbon dioxide in 2005 reached a concentration of 379.1 parts per million, the World Meteorological Organization said on Nov. 3. That's the highest level ever recorded, and an increase of more than a third from 280 ppm since industrialization began in the late 1700s. the historic level for 650,000 years fluctuated in a band broadly between 180 ppm and 300 ppm.
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Belgium, Denmark, France, Germany, Italy, the Netherlands, Norway, Sweden, Switzerland and the United Kingdom all contributed scientists and funding to the EPICA drilling program. The Ice core was extracted from the Concordia Dome C scientific base at about 75 degrees south on the Antarctic plateau.
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