Subsidies for fossil fuels, globally, amount to 4 times the subsidies for renewable energy. Shifting 30% of the fossil subsidies to renewable energy could make renewable energy so advantageous that the world would switch quickly.

That is not enough by itself to avoid disaster. We need also to cut down on cattle and growing crops to feed cattle.

We need to increase forests instead of cutting them down.

We need to put an end to energy-expensive bitcoin mining.

But we could do those things, if we do the big job.