nign carbon dioxide. Now, CO2 has been demoted.
The EPA's characterization of CO2 as a pollutant brings into question the natural order of things. By the EPA's logic, either God or Mother Nature (whichever creator you believe in) seriously goofed. After all, CO2 is the base of our food chain. "Pollutants" are supposed to be harmful to life, not helpful to it, aren't they?
Of course, it is true (although environmentalists often ignore it when trying to ban such useful chemicals as pesticides, insecticides, Alar, PCBs, and others) that "the dose makes the poison." Too much oxygen, for example, poses danger to human life. So what is the "right" concentration of CO2 in our atmosphere? There is no right answer to this question. The concentration of CO2 in Earth's atmosphere fluctuated greatly long before humans appeared on Earth, and that concentration has fluctuated since then, too.
The current concentration is approximately 385 parts per million. Some scientists maintain that 1,000 parts per million would provide an ideal atmosphere for plant life, accelerating plant growth and multiplying yields, thereby sustaining far more animal and human life than is currently possible. Whatever standard the EPA selects will be arbitrary.
"Forget about the plants," say the greens. "What we're trying to control is how warm Earth's atmosphere gets." To which I reply, "With all due respect, are you kidding me?"
As with a "right" concentration of CO2, what is the "right" average global temperature? For 7,000 of the past 10,000 years, Earth was cooler than it is now; mankind prospers more in warm climates than cold climates; and the Antarctic icecap was significantly larger during the warmer mid-Holocene period than it is today. Are you sure warmer is bad or wrong?
And how do you propose to regulate Earth's temperature when as much as three-quarters of the variability is due to variations in solar activity, with the remaining one-quarter due to changes in Earth's orbit, axis, and albedo (reflectivity)? This truly is "mission impossib