Coal is likely to overtake oil as the world's main source of energy in the next five years, with potentially devastating effects in the environment, says the International Energy Agency (IEA).
Swiss miner Xstrata (LON:XTA) is delaying the commercial production of its $5.9 billion Tampakan copper-gold project in the Philippines to 2019, Sagittarius Mines Inc, the firm's local unit, said Wednesday.