Five years ago, South Carolina Republican Senator Lindsey Graham joined a handful of senators traveling to the Yukon territory to view firsthand the effects of climate change. Witnessing melting ice caps and permafrost, and Inuit communities struggling to cope with a transforming environment, Graham was “moved.” “Climate change is different when you come here, because you see the faces of people experiencing it,” he said. In the following years, he asserted that “climate change is real” and promoted a cap-and-trade bill in the Senate. Today, Graham is sprinting in the other direction.
One of the quirks of global warming is that average temperatures in the polar regions are rising a lot faster than they are in the rest of the world. (See here for an explanation.) That's not exactly reassuring, since a lot of the climate impacts we care about, especially the melting of Greenland and Antarctic glaciers and the potential release of methane gas from the tundra, will occur in exactly those areas.