> Do we have evidence of what happened with coral reefs in earlier historical eras with much lower temperatures? Some extinctions happened. In most of the othe

> Do we have evidence of what happened with coral reefs in earlier historical eras with much lower temperatures? Some extinctions happened. In most of the other cases, the corals had much, much more time to adapt. Imagine going 0 to 60 in a minute vs going 0 to 60 in a millisecond. One of those is going to crush you into a paste. We're halfway through that millisecond, watching things get pasted all around us, and trying to figure out if we can somehow stop this process. Gradual warming and cooling, even to relatively extreme temperatures and CO2 levels by today's standards meant that corals had many, many generations to adjust. Today, not so much.