Our earth has experience climate change before

Climates change all the time. Temperatures vary from hour to hour, day to day, season to season, year to year, eon to eon, millennium to millennium and epoch to epoch. Climate change does not affect every place on the earth the same. Some areas will become more desirable as the climate cools or warms. Just ask a duck or goose that flies from North to South and back again every year. Or better ask a "Snow Bird" Canadian that migrates from north to south and back again every year. It was always the human condition to migrate during ancient times. Why live out the winter on top of a snow cap when the coast is warm and breezy during the winter? Cattlemen move their cattle from high country to low country grazing grounds very winter, it's the obvious thing to do. Al Gore wants to change the weather rather than adapt, adaptation is more "green" than phony climate religion.