Videogum dug up this little gem -- a pro-CO2 video.
Now, I'm not fundamentally against carbon dioxide. And I don't know anyone who is. And that's what makes this so great.
This is from 2006, but it doesn't seem to have gotten much play: an actual ad that ran on TV in defense of our "friend" Carbon Dioxide. It's spit-take-inducingly funny, but I swear, I researched it, and it's not by The Onion. It's 100% real: