The New Yorker's Elizabeth Kolbert explains why the Keystone XL pipeline must be stopped for a chance at a livable future.
If we take the future at all seriously, which is to say as a time period that someone is going to have to live in, then we need to leave a big percentage of the planet’s coal and oil and natural gas in the ground. These basic facts have been established for decades, and every President since George Bush senior has vowed to do something to avert catastrophe. The numbers from Mauna Loa show that they have failed.
In rejecting Keystone, President Obama would not solve the underlying problem, which, as pipeline proponents correctly point out, is consumption. Nor would he halt exploitation of the tar sands. But he would put a brake on the process. After all, if getting tar-sands oil to China were easy, the Canadians wouldn’t be applying so much pressure on the White House. Once Keystone is built, there will be no putting the tar back in the sands. The pipeline isn’t inevitable, and it shouldn’t be treated as such. It’s just another step on the march to disaster.