Herald Sun: THE world may be on track to face economic and ecological collapses by the middle of the century, according to CSIRO research. The 1972 bestselling scientific report The Limits to Growth warned of possible doomsday scenarios created by unchecked use of resources. A study by CSIRO physicist Dr Graham Turner found data projections made in The Limits to Growth were correct. Dr Turner said projections relating to population, food and industrial production, pollution and …