New global warning on climate change

Average temperatures will rise 1C by 2030 and could increase as much as 5C in Australia by 2070 if global greenhouse emissions are not cut drastically. A major report by the CSIRO and Bureau of Meteorology, released yesterday, warns marine ecosystems, including the Great Barrier Reef, could be damaged beyond repair if temperatures rise more than 3C and alpine ecosystems are at risk from increasing temperatures. The Climate Change in Australia report concedes a 1C temperature rise is inevitable but human activity will dictate increases beyond 2030. Under a low emissions scenario, in which greenhouse gases in the atmosphere are stabilised, temperatures may increase 2.5C by 2070.