And why are they using the 30 yrs 1960-1990 and not 1960-2020 to...

  1. 6,063 Posts.
    lightbulb Created with Sketch. 174
    And why are they using the 30 yrs 1960-1990 and not 1960-2020 to show we have had the hottest of the hot ?
 
arrow-down-2 Created with Sketch. arrow-down-2 Created with Sketch.