Global warming in one unmistakably compelling chart – Washington Post (blog)

Global warming in one unmistakably compelling chart
Washington Post (blog)
Produced by NASA, the chart illustrates how temperatures have compared to “normal” (or the 1951-1980 average) from 1880 to present, from pole to pole (-90 latitude to 90 latitude). From the 1880 to the 1920s, blue and green shades dominate the chart, 

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