CBC: Canada's environment minister says all jurisdictions in Canada need a price on carbon, and she won't rule out imposing a national price if provincial leaders drag their heels. "What is really clear is that every jurisdiction needs to have a price on carbon, and the premiers have all recognized that a price on carbon is part of the solution [to fight climate change]," Catherine McKenna said in an interview with Chris Hall on CBC Radio's The House. Trudeau and the provincial premiers announced...