2016 is officially the new warmest year on record, edging out previous record holder, 2015, by 0.07°F, according to NOAA. It is the third year in a row that global average surface temperature set a new record, and the fifth time the record has been broken since the start of the twenty-first century. This animation shows annual temperatures each year since 1880 compared to the twentieth-century average, ending with record-warm 2016. Because of global warming due to increasing greenhouse gases, th