Last four years are 'world's hottest'

The year 2018 is on course to be the fourth warmest on record, according to the World Meteorological Organization. It says that the global average temperature for the first 10 months of the year was nearly 1C above the levels between 1850-1900. The State of the Climate report says that the 20 warmest years on record have been in the past 22 years, with the 2015-2018 making up the top four.

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