Australian Broadcasting Corporation: Fire crews have been battling blazes in South Australia and Victoria as the southern states endure a weekend of extreme weather conditions. Firefighters in SA spent Saturday tackling fires in Belair National Park in the Adelaide Hills and at Bangor in the Southern Flinders Ranges. Earlier, three water bombing aircraft were called in to support firefighters but have since been stood-down. One firefighter was hit by a falling branch and suffered a back injury while another has been treated for heat...