The government of oil-rich Alberta province in western Canada on Sunday pledged to phase out coal emissions by 2030, limit greenhouse gases from oil-sands production and implement an economywide carbon tax. The province unveiled the long-awaited plan one day ahead of a meeting in Ottawa among Prime Minister Justin Trudeau, Alberta Premier Rachel Notley, and the leaders of other Canadian provinces and territories to discuss environment policy. Mr. Trudeau has pledged to develop a framework for reducing greenhouse-gas emissions before a United Nations summit on Nov. 30. The plan comes at a challenging time for coal and oil producers in western Canada that are struggling to cope with low commodity prices. “Our goal is to become one of the world’s most progressive and forward-looking energy producers,” Ms. Notley said at a news conference in Edmonton. “We are […]