Canadian Press: Climate change is not on the official agenda of the G7 meeting, but activists say a new report released as some participants took a dog-sled run proves it should be. The U.S.-based Pew Environmental Group said it has quantified for the first time the economic costs of the Arctic’s warming and it adds up to at least US$2.4 trillion over the next 40 years. Economist Eban Goldstein of Bard College in New York says the Arctic is warming at twice the rate of the rest of the …