Guardian: The worlds nations are meeting in Lima, near the equator, to pledge and promise about global warming. But the actual worth of those promises can be more accurately gauged in the far north and the far south of the planet, where real decisions in the next months will show whether the climate concern is rhetorical or real.
By now most people know about the northern example: the tar sands of Alberta. Some time in the coming months the new Republican-controlled Congress will demand that Obama approve...