How long solving environmental issues might take

In light of how long society has been dealing with environmental issues, as we learned with Pan's Travail, here's a look at how long it has taken (and might take) to solve one of our biggest environmental issues. A clip for Jon Stewart Fans. The whole episode is great, but the clip I'm talking about begins at 6 minutes and 50 seconds.

http://www.thedailyshow.com/full-episodes/wed-june-16-2010-louis-c-k-

please ignore the commercials before the clip