After all, the
reality that
humans are causing the climate to warm, with potentially catastrophic results, really does demand radical government intervention in the market, as well as collective action
on an unprecedented
scale.
First of all, Oreskes et al. emphasize that the
reality of mean global warming is essentially undisputed, but that the future impacts
on the
scale for which
humans would have to prepare are still the subject of considerable research, inquiry, and debate.