The Canadian government approved a national carbon price on Friday after a heated discussion. In a meeting attended by provincial representatives, aboriginal leaders, as well as United States Vice President Joe Biden, Canadian Prime Minister Justin Trudeau pushed the carbon-pricing plan he had been working on for months. […] The plan calls for the cost of producing a ton of carbon pollution to rise 10 Canadian dollars ($7.60, €7.19) per year starting in 2018 until it reaches 50 Canadian dollars in 2022. In a compromise, the price would pause for British Columbia at 30 Canadian dollars in 2020. Out of...