GENEVA  - Global losses from natural disasters hit $138 billion in 2012 , with half the sum claimed by drought and Hurricane Sandy in the United States, the UN said Thursday. Hurricane Sandy, which lashed the US east coast in October, caused some $50 billion of the losses recorded in 2012 , the UN Office for Disaster Risk Reduction (UNISDR) said. The next most costly disaster was also in the US, where a drought centred in the south of the country cost $20 billion. It was the third year in a row in which losses linked to natural disasters topped $100 billion, and the 10th in the past three decades, UNISDR said.