OK, let me start of with the disclaimer that I'm all for green energy.., and that this is a little bit of a rant from a thorn in my side. So.. with that out of the way, I have to really doubt the validity of a lot of these green energy projects...The one that caught my eye in particular was ReRev, It is a project where they're gathering the energy generated in gyms and feeding it into the grid. Has anyone ever done the math on the energy expenditure vs return on this project? I mean from start to finish, that is mining and refining the minerals required to build the hardware, Shipping it to China and then back again (probably), and then finally installing it. Besides the cost which I'm sure is a negative return on investment, I'd suspect that unless you keep your gym full of Lance Armstrongs on steroids you'll never recoup the energy expended in the project. Along with that come all the appliances, etc that are "energy saving"... What good are energy saving appliance if we just keep amassing more appliances, and specifically more (often) useless gizmos that need batteries? Closer to home for me since I'm a farmer, is the ludicrous idea of rooftop gardens feeding the new green world... Most of these gardens will grow some lettuce and tomatoes, but none of them will ever provide any form of real nutrition. Thoughts?