1.3  The Earth's Atmospheric CO2 ppm concentration

The Earth’s Atmospheric CO2 ppm concentration, Average Temperature, and Sea Level over 400,000 years

This chart is extended upon scientific data from what is considered “The scariest graph in climate science” – originally developed by Jim Hansen who graphed a 420,000-year record of carbon dioxide and temperature, inferred from a 3.6-kilometer ice core recovered at Russia’s Vostok station in Antarctica (see “C02 and the ‘Ornery Climate Beast,’”).