Climate Change and CO2 400 ppm graphic and stories by BBC (Carbon dioxide passes symbolic mark) and AFP (Carbon dioxide in atmosphere hits historic high)

If you follow the climate news to even a moderately obsessive degree, then you’re aware that we’ve been creeping up on 400ppm, which is to say, an amount of CO2 in the atmosphere that’s 400 parts per million, by volume.
As the above graphic and stories by BBC (Carbon dioxide passes...Climate Change and CO2 400 ppm graphic and stories by BBC (Carbon dioxide passes symbolic mark) and AFP (Carbon dioxide in atmosphere hits historic high)