On today's show: The Alberta Energy Regulator has given the green light for a coal exploration project at Grassy Mountain. The Globe and Mail's Emma Graney gives us the latest; We have a conversation with a local artist who is responsible for the new murals coming to Calgary's East Village; Police have laid charges against two men suspected in an attack on a transit driver this week. We spoke with the head of a local transit union for more on the latest calls for increased security.