Sydney Morning Herald: AUSTRALIA could build a low-carbon economy based on solar, wind and geothermal power by the middle of the century for less than half the cost of the Federal Government’s economic stimulus package, says a report commissioned by WWF Australia. As Earth Hour approaches, the event’s organiser, WWF, is trying to shift debate back to what it sees as the modest cost of turning Australia into a society based on renewable power. Many industry groups argue that moving away from cheap …