19. The largest known prime number contains 41,024,320 digits. 20. Frogs breathe and drink through their skin. 21. A bullet fired from a 223 Remington leaves the weapon at up to 2,727 mph (4,390 km/h) ...

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Someone asked “What is a genetics fact that not a lot of people know?” and people detailed their best bits of info.

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Did you know earthworms breathe through their skin? Mad Science of Austin & San Antonio shares fun facts about these wiggly worms, and how your kids can learn about science at summer camp.

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