Something I'd heard about climate change many years ago was that it would happen almost imperceptibly slowly at first, then suddenly when we reach the tipping point, it would start happening very rapidly. I think we're right at the sharp edge of that tipping point and things are going to get very interesting very quickly.
It's related to the old-timey curse that sounds like a complement. "May you live in interesting times", because as interesting as it may be to read in the history books, It wasn't as fun for the people living in those times.