"Serious yet about ending climate change?"

Nope.

This planet has always had a changing climate. If you end change you get stagnation.

The best we can hope for is that the climate remains suitable for the human contingent for a while longer.

To that end we should do nothing that exacerbates change toward one extreme or the other, but what that constitutes, I don't know.
And I think scientists are just guessing as well!