09 Apr '12, 11am

Too hot for you in Cambridge today? Cool off & read "Secrets of how the last ice age ended" #1stdayofsummer

Too hot for you in Cambridge today? Cool off & read "Secrets of how the last ice age ended" #1stdayofsummer

Deglaciation; Credit: Oak Ridge National Laboratory Scientists are starting to unravel the secrets of how the last ice age ended. Researchers from Harvard University, the University of Wisconsin and Oregon State University say that global rises in carbon dioxide in the atmosphere were to blame. Alterations in the Earth's orbit could have played a part in global warming around 20,000-10,000 years ago, but was not as significant as the rise in CO2. Jeremy Shakun, the study's main author and a Harvard visiting postdoctoral fellow, says, "Orbital changes are the pacemaker. They're the trigger, but they don't get you too far. Our study shows that CO2 was a much more important factor, and was really driving worldwide warming during the last deglaciation." The findings from the American researchers are published in the latest issue of the journal Nature . The team collected 80 sa...

Full article: http://www.earthtimes.org/climate/secrets-ice-age-ended/1...

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