BBC: Geologist Bakutbek Ermenbaev points up through the pine trees at the glacier above us in Kyrgyzstan’s Alatau mountains. “That one – called Adigene – has decreased in size by about 20% over the last 50 years,” he says. He adds that a neighbouring glacier, Aksai, has disappeared completely. Mr Ermenbaev, who works for the government’s hydrogeology agency, says global warming is to blame. And he warns that unless action is taken to reduce this warming, all of …