They basically combine thousands of thermometer readings from weather stations on land and ships at sea, and then smart scientists adjust for things like cities getting hotter on their own. They’ve been doing it since the 1850s, so that 1850-1900 period is the baseline “normal” temperature to compare against now. Honestly, reading the detailed methodology for my project made me realize how much careful, global cooperation goes into this number, which we just scroll past in headlines. It’s the opposite of the quick, sloppy group projects we rush through in college sometimes.
#pitches#groundstaff
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