Hey, If by not using my computer I could sing handedly stop global warming, I would, but it is beyond mine, or really anyone's control at this point.
The climate is never under control though. The Planet is never under control... and it isn't fair and isn't nice (look at the South Asian Tsunami) except in an oddly bittersweet way; take volcanos for instance. A bad eruption can kill thousands and change the global climate for quite a while (Tambora is the best example) something than can also kill thousands due to famine and all that.
But at the same time, volcanos do bring benifits; fertile soils are the most obvious (and the main reason why so many people live so close to them) but there are others as well (an excellent supply of building stone is another).
It's the same with things like flood plains, or living on low lying islands.