That's a fair point, but the thing about regulation is it only works for one country at a time. For whaling we could make a law and apply it to the whole world, and most countries complied only because there were no whales left and no money to be made in it anymore. That's the real reason whaling ended.

With climate change, I don't think it's possible, and the current track record seems to back me up. When Europe enacts green legislation, the fossil fuels are just consumed elsewhere. It hasn't reduced consumption, just moved it. So, no, I don't see how we can regulate a way out of this problem. I think the only viable option is to innovate.

Maybe I'm too cynical, but that's the way I see the situation.