how is that horrifying?

Daisyworld.

Less albedo -> more heat -> ice caps melting -> less albedo and more greenhouse gases -> much more heat, and so on.

It’s a vicious cycle, and there doesn’t seem to be any viable solution. We could put shades between us and the sun, but that’d probably reduce light too much and kill most plants, leading to even more carbon being released.

We’re fucked, and probably way beyond any chance of unfucking ourselves. We let those pass by years ago.