Great segment, Laura. I'm really into environmentalism and have seen "An Inconvenient Truth" three times since it came out. I even convinced the PIRG chapter at Rutgers University to go ahead and show it at a Pizza party as part of their Campus Climate Challenge.
I then convinced my parents to adopt solar power on the family house. That was damn expensive, but the state will cover half the cost and the whole procedure is tax deductable and saves cost on energy in the long run. It was a little bit more expensive than even I expected, and they had to pay to get the roof redone for the procedure, but I think its worth it.
I'm really strict when it comes to turning everything off when its not in use. I even power down my entertainment center if I'm away for over a day - totally unplug everything. Yeah, resetting the clocks and wi-fi stuff afterward is a hassle, but its worth it in the long run.
I've already been to 18seconds. Naturally, I got my light bulb and I made my parents get them also. I'm in the process of convincing my friends too, but thats a whole other story. Again, great segment, Laura.