The Level of Carbon Dioxide in the Atmosphere Hasn't Been This High in 800,000 Years

The Level of Carbon Dioxide in the Atmosphere Hasn't Been This High in 800,000 YearsThe concentration of carbon dioxide in the atmosphere surged in 2016 to its highest level in 800,000 years, according to a report released Monday by the United Nation's World Meteorological Organization (WMO).



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