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If you tune in to a TV weather report on today's Northern hemisphere summer solstice, you might notice the meteorologist wearing a unique striped tie or necklace that begins in blue and changes to red.
This isn't just a fun summer style. The design is actually University of Reading climate scientist Ed Hawkin's "Warming Stripes" visualization, which represents the change in annual global temperatures from 1850 to 2017. Nearly 100 TV meteorologists are displaying it in some way on Thursday as part of Meteorologists United on Climate Change or #MetsUnite, Weather Underground reported.