Swedish man Gus Wickstrom was convinced he cracked the code of predicting the weather using a pig's spleen. He explained to the Farmer's Almanac that this custom, which crosses cultures, can predict the weather six months in advance. After slaughtering a pig, he'd divide the spleen into six sections, with the top toward the head representing the current month. Where the spleen gets thicker means a change in weather, usually drops in temperature and moisture, while any bulges indicate a storm.

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