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These Strange Sea Spiders Breathe Through Their Legs

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The Biggest Thing to Happen in the East Room of the White House

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The Most Out-of-This-World Sandwich Ever

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When Thanksgiving Day Parade Balloons Go Rogue

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Meet the Tully Monster, the Prehistoric Beast That Defies Categorization

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The Corporate Origins of the Smiley Face

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Disneyland Opened Today in 1955

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7 Sushi Facts You Should Know

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How Komodo Dragons Could One Day Help Save Your Life

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Creating a Water-Powered Hammer Using Stone Age Tools

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Inside the Clandestine World of Chameleon Ranching

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Watch How Computers Perform Optical Character Recognition

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Inside the Quest to Save 42 Giant Presidential Statues

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Scientists Put a GIF Inside Living Bacteria

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The Exclusive Club Of Non-Metric Countries

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Watch Conservationists Disassemble World's Largest Known Celtic Coin Hoard

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©2017 Mental Floss, Inc. All rights reserved. Mental Floss® is a registered trademark owned by Felix Dennis. mentalfloss.com is a trademark owned by Felix Dennis.