Hill: Reuters reports time is running out for Canada to offer a climate change concession that could help it seal a deal on the proposed Keystone XL oil pipeline with the U.S.
The Canadian government has failed to produce an agreement with its energy sector after two years of negotiating on ways to curb carbon pollution.
But if Canada were able to make a significant effort to curb greenhouse gas pollution, President Obama -- who has made climate change a top second-term agenda -- would be more willing...