Reuters: The first trade in Australian Emissions Units (AEU) since the government released its blueprint for a carbon trading scheme was carried out on Monday, providing an indication of the future cost of polluting in Australia. Newedge senior energy trader Donovan Marsh said his firm handled a transaction of 10,000 AEUs expiring on June 20, 2012 at A$22.25 ($15.14) each, helping to establish a price for carbon trading in Australia ahead of the start-up of the government’s …