Sailing Boulders, Mom-Eating Worms, the Most Humongous Fungus

Happy Earth Day! We're celebrating with facts about worms that eat their moms' skin, the fungus bigger than a blue whale, and rocks that sail across deserts all by themselves. Whose story will be voted "The Weirdest Thing I Learned This Week"?

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Edited by Jess Boddy: www.twitter.com/JessicaBoddy

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