Back in February 2013, I asked, “Is This the Year CO2 hits 400 PPM?” It wasn’t, quite: atmospheric carbon dioxide in the gold-standard record from atop Mauna Loa, Hawaii first hit 400 parts per million in April 2014, two years ago. We might wish wistfully
Marco Rubio won’t acknowledge the mountain of scientific evidence that unusual climate change is taking place and that human activities are responsible for it. He doesn’t want our government to take any action, except to just spend a lot of money to deal with the damage as climate change continues to accelerate.
The following are three graphs representing the change in parts per million of carbon dioxide (CO2) measured at the Mauna Loa Observatory in Hawaii from March 1958 through December 2015: All three graphs accurately represent the same data. Each is presented on a different scale. The