Levels of CO2 in the atmosphere have surged past an important threshold and may not dip below it for "many generations". The 400 parts per million benchmark was broken globally in 2015, but according to the WMO, 2016 will likely be the first full year to exceed the mark. • /r/worldnews

Levels of CO2 in the atmosphere have surged past an important threshold and may not dip below it for "many generations". The 400 parts per million benchmark was broken globally in 2015, but according to the WMO, 2016 will likely be the first full year to exceed the mark. (bbc.com) via Pocket http://ift.tt/2enCAWN