Carbon Dioxide CO2 Added By Humanity Is More Than 200 Times More Than All Volcanoes Combined – Global CO2 Is At Highest Level In 3 Million Years – As Oxygen Levels Drop, Human Intelligence, Reaction Times, Health And Environment Deteriorates – CLIMATE4YOU And Salby Debunked | A Green Road Journal

As the Intergovernmental Panel on Climate Change has shown, carbon dioxide levels in the atmosphere are higher than at any time in human history. The last time that atmospheric CO2 concentrations reached today’s level – about 412 parts per million – was 3 million years ago, during the Pliocene Epoch.

Carbon Dioxide CO2 Added By Humanity Is More Than 200 Times More Than All Volcanoes Combined – Global CO2 Is At Highest Level In 3 Million Years – As Oxygen Levels Drop, Human Intelligence, Reaction Times, Health And Environment Deteriorates – CLIMATE4YOU And Salby Debunked | A Green Road Journal