We are past the point of no return. Will Trump realize this in time to stop the destruction of all humans so that you can just suffer a major die-off? That is the question.
So the Arctic was 20C warmer this summer than the long term average. Methane hydrate is starting to melt. We are losing Arctic sea ice.
The methane atmosphere will do the most damage. Humans and mammals do not do well in this atmosphere yet. Methane keeps the heat in; the northern latitudes will be sauna, the central latitudes to hot to live in, except perhaps underground. Oh well, I will be dead by then. But the children of today will be here to see it, it is coming that quick.
We cannot stop it at this point, we could moderate the damage a bit, but if the US does not, no one else will. US and China are the two big emitters now.
The earth carbon cycle could handle 1960 level of human carbon production. That's it, that's all. No one has been willing to stop in the last 50 years. Oh well, in the end we all just die anyway.
But why do not other people see this and do something? No one is going to stop unless they have too. That is the basic problem.