The Hill Times: Politicians love to make bold commitments. But more times than not, they fail to follow up, perhaps hoping the public will forget once the headlines become a memory. In December, 2009, global leaders, including Prime Minister Stephen Harper, acknowledged that "deep cuts in emissions were required' if grave effects from climate change were to be avoided. That meant, the leaders said in their Copenhagen Accord, that the increase in global average temperature should be kept below two degrees Celsius...