Decision on coal mine ‘defies reason’ Super-coral may take heat off reef bleaching Climate change: Full coverage The cost of producing electricity from renewable energy could be slashed by as much two-thirds within 10 years, making it competitive with coal-fired power, experts say. And the cost of doubling the world’s total output of clean energy by 2030 would be lower than a “business as usual” approach because of the stunning production costs. The findings are…