By Andy RowellEarlier this month, we collectively walked into the unknown.We are all now a living experiment. Never before in human history have carbon dioxide levels reached 415 parts per million. These levels were last seen maybe some 2.5 to 5 million years ago, during the Pliocene, but then the earth was much warmer than it is today and it was way before us.
Back then, there was no Greenland and trees grew near the South Pole. Sea levels were much, much higher. Maybe 25 meters (approximately 82 feet) higher.415 ppm is a grim number. It signals we are in deep, deep trouble. And in the words of Rolling Stone magazine: Further evidence (as if further evidence were needed) of just how hell-bent we are on cooking the planet we live on.
To show you how much we are changing the climate: Every year another 2 to 3 ppm of carbon dioxide enters the atmosphere. Before the industrial revolution it was 280 ppm. And now it is 415 ppm.We could have stopped the relentless rise of carbon dioxide, but we did not. In part the reason we collectively have failed to do so is the power of the oil companies and one of the most sophisticated public relations exercises ever undertaken to deny and obfuscate the truth.
The oil companies could have acted and kickstarted the renewable revolution, but they did not. But they knew. #ExxonKnew.As Think Progress noted this week, one of the documents obtained by InsideClimate News into its investigation into what Exxon knew about climate science decades ago was an internal 1982 document from the Exxon Research and Engineering Company.
In this document the oil company mapped the growth of atmospheric CO2 and average global temperature increase over time.Amazingly, as Think Progress highlights, the company predicted that that, by 2020, carbon dioxide in the atmosphere would reach roughly 400 to 420 ppm. This months measurement of 415 ppm is right within the expected curve Exxon projected under its 21st Century Study-High Growth scenario.
Exxon not only predicted the future, it also knew how bad it could be.Not only did Exxon predict the rise in emissions, it also understood how severe the consequences would be, including warning of considerable adverse impact of rising carbon dioxide levels, including flooding and the melting of the Antarctic ice sheet.
Exxon knew all this, but instead of acting, went on to pour tens of millions of dollars into a massive disinformation campaign that we still see today being spouted by President Trump and Fox News.No wonder climate scientists are alarmed at us reaching 415 ppm.Professor Michael Mann told Think Progress, If you do the math, well cross 450 ppm — which likely locks in dangerous planetary warming of more than 2°C/3.
.5°F — in just over a decade.Peter Gleick, the president emeritus at the Pacific Institute for Studies in Development, Environment, and Security added: Not that we need it, but the latest numbers are further evidence of the massive impact humans are having on our atmosphere and.....