Average Global Temperature Has Warmed 1.5 Degrees Celsius Above Pre-industrial Levels for 12 Months in a Row

By Bob Berwyn

Last month wasn’t only the hottest June by far in the observed temperature record, but marked the first-ever 12-month stretch of the Earth’s average temperature exceeding 1.5 degrees Celsius of temperature rise above the pre-industrial baseline against which human-caused warming is measured.