North Pole to be ice-free in summer before 2050 even if emissions are cut: Study

The Arctic Ocean will likely be ice-free in summer before 2050, found a study of 41 climate models involving 21 research institutes. Scientists said the efficacy of climate-protection measures will determine how often and for how long Earth will have a northern ice cap year-round. Even if CO2 emissions are reduced rapidly, ice-free years will still occur occasionally, they added.