One of the key indicators of what may happen in the future with higher co2 levels, is the paleo record. We can look at the Paleocene Eocene thermal maximum as a model for what our current pulse of co2 could do to the planet.
Peter Ward has been looking into much deeper time throughout his career. The view over 4 billion years is instructive but not happy news.

I just finished his book “Under a Green Sky”..Very readable for non scientists
and one that will keep you awake at night
What was the Seattle project that he mentioned?
Reblogged this on Climate Force.