Four hundred and fifteen. US News & World Report is reporting that the amount of CO2 in the Earth’s atmosphere reached more than 415 parts per million. The article quotes research from the Scripps Institute of Oceanography from May 11. Historical levels of CO2 in the atmosphere were measured through core ice samples prior to 1958 and directly from the Mauna Loa Observatory from 1958 onward. Take a close look at the graph accompanying this article. At first it’s hard to see the vertical line streaking skyward at the right edge. That’s CO2 emissions. From historical peaks oscillating between 250 ppm and 300 ppm over the last 800,000 years to over 415 ppm today. If that isn’t sufficiently startling, the annual peaks over the past few years: 2015 – 405, 2016 – 409, 2017 – 413, 2018 – 413, 2019 – 415 (so far).
Nobody wants anthropogenic global warming to be true but it is true. Continue reading