When you come upon a spider in your house, what do you do? Some people choose to squash it so they won't have to share space with a creepy crawly critter. Others might leave it alone because they know it'll most likely eat insects, thereby cutting down the overall population of creepy crawly critters in their home. New research is showing that those in the latter camp have it right: the amount of insects spiders eat every year is so astronomical that it rivals our own human-sized diets.
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