Jeff, in 100 years the primary global energy source will be different than it is today. If the midwest ceases to be the breadbasket perhaps Alaska will? Life will be different in 100 years but I don't believe that has to be a bad thing. The extra CO2 might green up the planet enough to suck down all that nasty gas and output levels of oxygen not seen since dinosaurs roamed. And, I don't feel guilty about living the lifestyle I've built for myself and family, but I am tired of this discussion. Oh, mankind will adapt, but there will still be some better off than others. I don't feel guilty about that, either. I'm out.