At the same time, I agree that we need to minimize costs, and that we should be investing billions into improved energy efficiency, cheaper technologies, etc. I also think those who can pay the least for higher prices should not pay; instead, they should be given tax rebates to compensate for any increases in prices. A carbon tax could well do that, and it has been shown to do so already. Politically, some might say no because it would mean a lost election in the next round, but I think Obama’s message fits well here. We can’t continue politics as usual. And we can’t just expect change from government; we need society to change. I think it’s important to understand that.