The current rise in global temperature is faster than anything seen before. That's the big problem, it's too fast for the normal adaptation mechanisms. So whi

The current rise in global temperature is faster than anything seen before. That's the big problem, it's too fast for the normal adaptation mechanisms. So while there have been rather elevated temperatures before in geological history, the temperature changes have been very gradual, not the wild rise we've seen in less than 100 years, which is a mere instant in geological terms.