Take a look at the photo above. Yes, I know it’s just a picture of some melting snow, but take a closer look. Notice anything strange about it?
There’s only snow remaining on every other square tile. It’s melted into a snowy checkerboard, and no one has any idea why. There are no heaters or sewers or anything involved here, just good old-fashioned science, and some hypotheses are more science-y than others.
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