ALBAWABA - The current levels of carbon dioxide emissions in the air have reached their highest point in over four million years due to the burning of oil, coal, and gas. Levels of heat-trapping carbon dioxide in the air are now 50% higher than they were before the industrial era began, according to scientists from the National Oceanic Atmospheric Administration and the Scripps Institution of Oceanography. #ثاني_أكسيد_الكربون بالهواء يبلغ مستوى ...