I'd just finished posting about the incredible amount of havoc wreaked by extreme weather events in 2011–there were 32 different disasters that each cost over $1 billion, and one that cost as much as $45 billion–when I happened upon this great PBS video segment on the topic.
The NewsHour show deftly summarizes the catastrophic weather events that hit the United States last year, and then proceeds to frame them in the greater context of advancing climate change. Watch (via Think Progress Green):
Watch How 2011 Became a 'Mind-Boggling' Year of Extreme Weather on PBS. See more from PBS NewsHour.
Pretty scary stuff, on every front.
And Jeff Masters of the Weather Underground offers a useful little analogy in there regarding how climate change impacts weather: Extreme events "all tend to get increased when you have this extra energy in the atmosphere. I call it being on steroids … for the atmosphere."