Well, I am of the opinion that global warming is (a) real and (b) something to worry about, but I am not convinced that the apocalyptic predictions are at all likely to come true. Malthus' terrifying predictions have not come true yet, nor has the great population bomb exploded on us yet.
My point: don't underestimate the ability of technology to save our asses. Currently, an electric car that people
actually want, and not just because of the smug factor, costs about a hundred grand. I'd be willing to bet that it will cost much less than a hundred grand in ten years. It doesn't happen by magic, but either things will get really fucked up or oil will get more expensive, and suddenly the invisible hand of the market will find itself putting loads more money in the pockets of people trying to make cheap and (relatively) carbon-free energy. Governments could speed the process along, at great cost, by a carbon tax (or cap and trade, but a carbon tax is less amenable to gaming by interested parties at legislation time). I'm generally in favor of a carbon tax, if only because I believe anything the editors of the
Economist tell me to believe.
Obviously, I could be wrong. But technology is generally a better horse to bet on than the apocalypse.