Previous GHG(Greenhouse Gas Levels) have been as high as now and higher but transition time has been 10,000 years compared with 50 odd today. Recent predictions of sea level rises have consistently been exceeded, with rate of rise doubling every 7 years. How much longer before our democratic representatives see the need for action as big as response to WW2?
https://mailchi.mp/climatenewsnetwork/rising-seas-cost-may-be-27tn-a-year-by-2100?e=81a8983ef7