Air pollution in Mexico City. Global CO2 emissions need to drop 45 percent by 2030 and reach 'net zero' by 2050 to limit temperature rises at 1.5 degrees Celsius AFP/Pedro PARDO

LONDON: The United Nations' COP 26 climate change summit due to take place in the Scottish city of Glasgow in November has been postponed due to the coronavirus pandemic, the British government said on Wednesday (Apr 1).