As the UN climate talks in Egypt near the half-way point, negotiators are working hard to draft deals on a wide range of issues they’ll put to ministers next week in the hope of getting a substantial result by the end. The two-week meeting in Sharm el-Sheikh started with strong appeals from world leaders for greater efforts to curb greenhouse gas emissions and help poor nations cope with global warming. Scientists say the amount of greenhouse gases being pumped into the atmosphere needs to be halved by 2030 to meet the goals of the Paris climate accord. The 2015 pact set a target of ideally li…