Australian: KEVIN Rudd’s credibility-sapping decision on Tuesday to delay the introduction of his carbon pollution reduction scheme until 2013 at the earliest, means that he goes into this year’s election with a less crystallised climate change policy than John Howard took to the 2007 election. At that time Rudd mocked Howard as a climate change sceptic, someone unwilling to even ratify the Kyoto Protocol; someone who didn’t take the profound effects of global warming seriously. Now, when …