Sydney Morning Herald: Worldwide temperatures last month soared to new heights for October, boosted by the second-strongest El Nino on record, adding to the likelihood that 2015 will also smash annual heat records. The amount of heat required to warm up just the top two metres of the El Nino hot spot in the Pacific has been calculated at 100 quadrillion kilojoules - or about the total annual energy use in the US. Average surface temperatures worldwide were 0.53 degrees above the 1981-2010 average and the warmest since...