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Monday, May 13, 2013

World has entered new CO2 'danger zone', UN says

World has entered new CO2 'danger zone', UN says
The world has entered a "new danger zone" with levels of Earth-warming carbon dioxide in the atmosphere never experienced by humankind, the UN's climate chief warned Monday. http://phys.org/news/2013-05-world-co2-danger-zone.html#nwlt

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