Guardian: The governments key climate change advisory body has called for Australia to triple its target for reducing carbon emissions by 2020, with further, deeper cuts in the following decades. A leaked Climate Change Authority report to the government advises that Australia should aim to slash emissions by 15% on 2000 levels by 2020. This target should escalate to a 40% reduction by 2030 and 90% by 2050, according to the independent body. The report, which will recommend a reduction target and a upper...