I could write up a very very long comment in regards to the difference between modern Hollywood's take on humans being the brunt cause of end of the world disasters versus nature. Nature is far far scarier. And yet, they only ever show nature affecting small area... In the Day After Tomorrow it does affect a large area but it's all our fault because we are so evil. Let's ignore that mammoth we mention at the beginning from a previous ice age...or the data that shows the ice age ended in a matter of months...::much grumbling::