RE:RE:RE:RE:The effect of warmer temperatures It's true that the climate has changed in the past, sometimes rather quickly, due to volcanic activity, asteroids, etc. In all of those cases the results were catatrophic, resulting in the extinction of entire classes of animals. Now there are more than 8 billion people on the planet, 40% of whom live on coastlines. Where are they going to go as the sea level continues to rise? If you don't think that's a problem, you are living in fantasyland.
People are going to be leaving South Florida long before it's covered with water. The higher sea levels are already causing salt water intrusion into fresh water wells. The lack of fresh water will be the driver of migration long before water is lapping at people's front doors.