Age: AS PROFESSOR Ross Garnaut examines ways forward in reducing Australia’s carbon dioxide emissions, he will become aware of the enormity of the global task. If burning fossil fuels causes global warming, the prospects of preventing it are slender. In 2004, greenhouse gas emissions (in carbon dioxide equivalents) were 28,790 million tonnes. A little more than 10% of these were from the former Soviet bloc and the rest split fairly evenly between the Organisation for Economic Co-operation …