We Are About to Pass 400ppm CO2! The global warming tipping point was 385ppm, as set by James Hansen. The upshot of the CO2 escalation is that there is no longer any environmental point to pursuing energy efficiency. This fact has only been published in this blog, you will not see this noted anywhere else! We may continue to do our symbolic efforts, such as planting trees, but once the lemmings have passed over the cliff, there is no return. CO2 levels have not been this high on earth for 4 million years, when it was much warmer than today. Surveys say that your average U.S. citizen does not believe in the existence of CO2, due to the lack of science education.
The time has passed to tell your cousin the CPA with the Lincoln Navigator what he is doing to you, CO2 wise, of course!
The unimpeachable evidence: Global carbon dioxide levels set to pass 400ppm milestone .