DOHA (AFP) - The chances of hitting the UN’s global warming target are diminishing, but the goal can still be met if greenhouse-gas emissions fall by 15 per cent by 2020, scientists said on Friday. In a study issued at the world climate talks in Doha, they cautioned against mounting pessimism that the UN’s objective of curbing warming to a safer two degrees Celsius (3.6 degrees Fahrenheit) is now out of reach. “Limiting global warming below 2C, or even to below 1.5C, remains technically and economically feasible, but only with political ambitions backed by rapid action starting now,” the team said. “If nothing more is done except the current pledges, costs would be much higher to reach deeper reductions necessary, and/or the damage from climate impacts would be far greater.”