The US was not as hot as the rest of the world this year, as far as I know. Certainly not in October.
The temperature change that was probably affected by the Clean Air Act is over the North Atlantic. China was not burning nearly as much coal from the 1950's through the 1980's as they are now - let's not conflate things. We'll see if the current pollution produced in China and India will "offset" the heat retention caused by the rising levels of carbon dioxide, methane, nitrous oxide and other GHG that have been increasing faster and faster.
What do you think of the Frontline program?
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