The climate is always in a state of change and has been since it first appeared on this planet. — Varnaj42
Yes, you are right -- climate is always in a state of change. We have all sorts of evidence to support that idea. Nobody (in their right mind) denies this. However, nobody in their right mind thinks the current, very rapid climate change is normal.
China is reported to be building new coal fired power plants all the time but no complaint is ever aimed at China. Why not? — Varnaj42
Au contraire! China is very much recognized as the largest current contributor of CO2 from coal fired power plants and auto emissions. China has an all-round atrocious record of air and water pollution. On the other hand, they are also building out very large wind and solar systems. No industrial country--not the US, not the EU, not China, not anybody else--can convert from coal to solar, wind, nuclear, or hydro energy without expending huge amounts of energy constructing the new systems. Coal, oil, and gas have to be used in the interim for steel, cement, aluminum, glass, mining, and other heavy industrial processes.
The big
CATCH 22 for us is that a lot of CO2 will be produced solving the CO2 problem. That's one reason why our situation is bleak.
Take electric cars for example. There are about 1 billion internal combustion automobiles on the roads around the world. They produce lot of CO2. "Oh, but once we are all driving electric cars, that won't be a problem any more. Electricity will be green." Hang on. How will we produce 1 billion electric cars without generating a lot of Co2? How will we mine, refine, and transport millions of tons of raw material for all these new cars without generating CO2? Who thinks we can have millions (billions) of solar panels and a few million windmills without heavy manufacturing in the near future?
The answer is that we will keep producing more CO2 for the foreseeable future as we attempt to change our economies from the bottom up.
Is there no way we can cut CO2 emissions quickly? Sure there is: We can all adopt a lifestyle based on 1890s technology. That would result in a very fast drop in the emissions of all green house gasses. Such a move would also involve the world's economies hitting a very thick brick wall at 80 mph. The only thing that would be as disruptive is probably a nuclear war or a world wide epidemic of the Black Plague
without antibiotics.
In summation, then, we are totally screwed.