CO2 Readings at Mauna Loa Observatoryhttps://www.ag.ndsu.edu/news/newsreleases/2012/march-26-2012/the-impacts-of-our-challenging-climate-conditions/co2-readings-at-mauna-loa-observatory.gif/viewhttps://www.ag.ndsu.edu/news/newsreleases/2012/march-26-2012/the-impacts-of-our-challenging-climate-conditions/co2-readings-at-mauna-loa-observatory.gif/@@download/image/2012-03-27.3916135278.gif
