Warmer temperatures do not mean the end of the world. If you take a look at the GISP (Greenland Ice Sheet Project) ice core the temp was 1 degree C higher 1000 years ago then the Anasazis Indians thrived in Americas southwest from 850 ad to 1250 ad as the southwest was much wetter and the Vikings were able to plant crops, then 2000 years ago it was 2 degree C higher where the roman empire was doing pretty good. Last it was 3 degree C higher 3300 years ago but this did not stop the Jewish exodus

Note the data from the southern hemisphere (Vostok) shows something different as it shows 3 major temp changes by 2.5 degree C over the same last 800 years but for some reason the global warming folks ignore this never explaining how CO2 only effects the northern hemisphere. Note after 10,000 years the earth returns to an elliptical orbit where the temp drops 9 degrees C lasting for about 80,000 years.