I always remember my Granddad telling me about all the gas and smoke from the 1st world war. He used to say he was worried that the gas would be able to kill people in years to come. He wondered where all the smoke from the guns and bombs went, plus all the fires caused.
I think nature will sort it all out one way or another. Look at all the wars and things going on at the moment, it all seems to be happening at once. All we need is for Putin, the chinks, or the fat bloke to get ambitious while the rest of the world are distracted by the Hamas thing, and other events.
Nature can make people think differently when it wants, after all, we are a part of nature, aren't we?