Reuters: Weekend bushfires in Australia that killed 173 people are a climate change wake-up call for the public and politicians and a window to the future, experts said on Tuesday. With the death toll still growing from the nation’s deadliest fires, some analysts say the sheer scale of the tragedy might prompt industry to back-off calls to weaken the government’s emissions targets or delay a carbon-trading scheme set for 2010. “What the bushfires might do is suck the oxygen out of the …