This handout photo taken on Dec 8, 2021 and obtained on Dec 10 from the Western Australian Department of Fire and Emergency Services shows firefighters at work near Margaret River. CANBERRA - Australia's national science agency has developed a new model for predicting the spread of bushfires. The Vesta Mark 2 Model, which was launched by the Commonwealth Scientific and Industrial Research Organization (CSIRO) on Tuesday, is Australia's most advanced model for predicting the speed an...