Toronto Star: Reducing greenhouse gas emissions is tricky. Its easy to set targets and hard to do anything that might meet those targets. But harder still is the ability to accomplish any of this in a sensible way. Thats the lesson from Ontario auditor general Bonnie Lysyk, who last week issued a scathing report on the provincial Liberal governments deeply flawed attempt to promote green energy. Prime Minister Justin Trudeau and others involved in the international efforts underway in Paris this week to curb...