The fact that the temps did drop alot could have killed alot of the burms in the everglades. But there is a HUGE misconception on global warming. Its not actually global warming. Its climate change. People think global warming will cause the earth to just heat up, but in reality it will just make the seasons and climates more extreme. Winters will become more and more harsh and summers equally as harsh. We'll have record cold temps and record hot temps. So dont just think global warming is warming up the earth. And it not even close to significant enough to stop cold snaps anywhere.