Australian Broadcasting Corporation: Ross Garnaut, the Rudd government’s climate advisor, will this week deliver his interim report on climate emission reduction mechanisms, but the bigger policy questions will remain unanswered. The report will outline proposals for a carbon emissions trading scheme, perhaps better described as a cap-and-auction scheme, in which the government sets a declining cap on carbon emissions, with permits to pollute allocated by way of auction. Many of the broad themes have been publicly …