So when did it become impossible to deny global warming? According to Penn State Climatologist Michael Mann it was 2018 when the effects of higher temperatures were impossible to dismiss. Mann believes that while the earth's situation is dire there is still time to make sure the the atmospheric temperature does not rise above 2 degrees centigrade over the beginning of the industrial revolution. Believe it or not such a well known environmental advocate believes that there is a free market solution to our problem. This is that if you are operating an energy consuming business you must pay a "carbon tax" for exceeding the appropriate increased societal costs in health and sea water rise concerns your business causes. Now naturally carbon based oligarchs such as the Koch family would not be happy about this, but renewable sources, supported by big battery back-up, have reached the point to do this. We must make it a fair fight where the business you are in must pay for the societal costs that you are not paying. To Mann renewable sources of energy are now competitive enough to beat the old carbon industry in a "fair" fight. If this is so, then we should all be working on the project. -Gorin A.