The July 5 letter, “Clean energy is critical to Minnesota”, said: “Minnesotans agree; doing nothing about our climate is not an option.”

Actually it is an option, because you can’t control global climate by making reductions in man-made carbon dioxide greenhouse gas. In 2010, Michael Bloomberg donated $50 million to Sierra Club; they put together a team of some 200 lawyers and activists and played a major role in shutting down about 200 coal plants.

The result? CO2 is still rising; and no effect on climate temperature.

So what’s their next move? Bloomberg is initiating a $500 million effort to stop construction of natural gas-fired power plants. Another totally worthless project for controlling climate.

With all that money flying around, is it any wonder environmentalists keep feeding us their baseless propaganda?

What I have noticed for over a decade of dealing with them is their inability to come up with a good explanation of how man’s tiny 3.2% share of the total global atmospheric CO2 budget is supposed to push global temperatures into a “Thermageddon” scenario. And they ignore water vapor, which has a far bigger greenhouse gas effect than man-made CO2 and varies widely across the globe on a daily basis.

Additionally, in my March 29 letter I noted we’ve got 40,000 miles of heat-belching, CO2-emitting, mid-ocean volcanic mountain ranges where in some places the water is over 700 degrees, and we only "real time" monitor a tiny fraction of it.

Question: Is Earth’s temperature going up because the CO2 level is going up? Or is CO2 going up because the Earth’s temperature is going up? The answer is obvious – rising water temperature will drive out dissolved CO2 at a higher rate into the atmosphere and also increase the greenhouse gas effect by adding more water vapor.

The $500 million could be better spent on monitoring the mid-ocean volcanic chain instead of pointlessly trying to reduce man’s microscopic injections of CO2 into the atmosphere.

Phil Drietz