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"?

The Weirdest Thing I Learned This Week is a podcast by Popular Science. Share your weirdest facts and stories with us in our Facebook group or tweet at us!

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

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