Age: WEALTHY countries’ targets to cut greenhouse emissions fall well short of what is needed to avoid catastrophic climate change, according to a confidential United Nations analysis. The informal note by the UN climate change secretariat dated June 6 estimates current pledges add up to a total emissions cut by the rich of between 16 and 24 per cent below 1990 levels by 2020. Conservative estimates suggest rich countries must make a cut of 25-40 per cent to give the world a chance …