We are winning.
Why else would global warming be such a success? While there are those who would halt our progress, still we ride forth, on steeds of smog, scouring the countryside. We have killed forests by directing the acidic rain, poisoned countless animals, and even managed to poke holes in the hated solar shield; our allies from the sun have joined us, spreading disease and death in their wake.
And just when we thought that our victory was assured, little things started to happen, things that could potentially change the war's outcome. More people started trying to conserve energy, conserve trees. These things are not enough to halt our advance, but they have slowed us down, made us work harder. This matters not to us. The planet is still full of energy wasters, and so we are still winning. As long as things remain as they are, we will eventually triumph despite these petty annoyances. The Earth will burn beneath our combined onslaught, until nothing good and green will ever grow here again.