Australian Broadcasting Corporation: ELEANOR HALL: Now to that alarming research on marine life in the southern ocean which shows that the tipping point where animals will struggle to survive will come sooner than scientists previously thought. Researchers at the Climate Change Research Centre at the University of New South Wales are warning that acidity in the Southern Ocean will reach destructive levels where it will dissolve the shells of marine organisms by 2030. As Jane Cowan reports that is at least twenty …