I'm not totally sure about that. There is a lot of investment in this area (albeit tossed and blown on the winds of political trends). Things like photovoltaics

I'm not totally sure about that. There is a lot of investment in this area (albeit tossed and blown on the winds of political trends). Things like photovoltaics are only a few years off being viable on a large scale (at current levels of investment which turns out to be the biggest problem). But I agree it's going to be a struggle and one that may go badly wrong for a while. But the key thing here is that we have to get the knee jerk politics out of it. It doesn't matter if there is global warming or not because if we stay dependant on fossil fuels there are just going to be endless conflicts over the them, if the greens can persuade everyone in the whole world to live a life of abstinence that's cool - but we need to bet that they can't - because their failure mode is that we all die horribly.