Global temperatures are likely to surpass the key limit of 1.5C above pre-industrial levels by 2027, scientists have warned.br br Researchers from the World Meteorological Organisation (WMO) said there is a 66 per cent chance of passing the temperature threshold in the coming years.br br It would be the first time in human history such a temperature has been recorded and the chances are rising due to emissions from human activities and a change in weather patterns.br br The WMO added that there is a 98 per cent chance of the hottest year on record being broken by 2027.