'How It All Ends': Climate-change video gone viral

Do you know "How It All Ends"? This 10-minute viral video (below) is taking the Web by storm, engaging climate-change activists and skeptics alike.

In it, Oregon high school science teacher Greg Craven makes a slightly geeky and campily entertaining -- yet simple and convincing -- argument as to why we should act against global climate change -- whether or not we agree global climate change is really happening.

This video is actually a revision that patches up the holes in his initial video, titled "The Most Terrifying Video You'll Ever See." Since posting these to great public response, Craven has been busy creating an "Expansion Pack" that supports and elaborates on "How It All Ends."

The goal of these videos: To educate and mobilize people into action. Accordingly, all of his work is available for free to download and manipulate as the user pleases. All the videos are on YouTube as well as Craven's own website WonderingMind42 and the Manpollo Project website.

Apparently, Craven worked a bit too hard on all of this. According to CTV, Craven ended up at the emergency room with chest pains, and was told by the doctors to reduce his stress level and take it easy.

Thanks to Marina at the L.A. Times for the link -- as well as for copy editing this blog!