Australian Broadcasting Corporation: The Federal Government faces difficult decisions on climate change policy after its leading adviser yesterday advocated tougher cuts on greenhouse gas emissions. The Federal Government is sticking to its election commitment of a 60 per cent cut in emissions by 2050, despite Professor Ross Garnaut’s view that cuts of up to 90 per cent are needed to halt dangerous climate change. Professor Garnaut says he thinks the Government could be convinced to make bigger cuts if countries …