All the spiders in the world combined annually eat about 440 to 880 million tons of insects and other pests — equal to the weight of more than 85 million elephants, according to a new study. That's a ...
(CNN) -- The next time you see a spider crawling around your house, look at the bright side. It's probably feasting on a bunch of other insects and providing you with free pest control. A new study ...
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