[Canadian Energy Issues] The most recent reported concentration of carbon dioxide (CO2) at the Keeling Observatory in Mauna Loa Hawaii ( April 9 2015) shows 404.65 parts per million. This is the highest it has ever been in human history.
It takes roughly 7.8 billion metric tons of CO2 dumped into the global air to increase the concentration by one part per million (according to the Carbon Dioxide Information Analysis Center at the Oak Ridge lab in Tennessee). One year ago the global concentration hit 400 ppm for the very first time. So for it to have gone from 400 to 404.65 ppm means we humans have, collectively, in the space of a single year, dumped 36.27 billion tons of the stuff into our air.
Ontario Canada has, since 2003, reduced annual electric power CO2 emissions by around 27 million tons. They did this not with a cap and trade system, nor with a carbon tax. They did it by simply adding and using more nuclear capacity. There were four nuclear reactors sitting idle and in need of refurbishment. So they refurbished them. Twenty-seven million tons. Done.