I think that the global won't change our lifes so much as we are thinking. I think that is only menace from geographers. We wouldn't live so long that we can see the changes. Maybe in 2100 the changes could be seen, but now we needn't to care about it, geographers usually alert us to be environment friendly and think about that what we do. Most of the people dont care about environment and think that they doesn't change it and their wrong.
All of us can change the world and make it better!