Soon as we and ISIS get done blasting Syria back to the stone age, the air ought to be pristine.
Then we can brag to the UN how much we are fighting climate change.
Consider that a two-fer.

I still have some optimism we humans can figure it out, even as we are forced by Mother Nature to adapt to the environmental catastrophes we've already created.

I'm a deeply optimistic pessimist; as if that makes any sense.

I believe we humans will learn to live lightly upon this earth.

If we don't, well then, we never deserved it, and the Universe will go on as always without us. We become no more than a curious layer of trash in the geologic record of this amazing Earth.

My formal training in evolutionary biology and paleontology comforts me.

Tho tis a shame so many undeserving have to part of the collapse.
At best there will be pockets of people who have learned already how to survive on what nature provides, and hopefully will be flexible enough to adapt.
Most of the takers...not so much.