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) ...

Learning doesn’t always mean flipping through heavy textbooks or sitting in a long lecture. Sometimes, it just takes ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Stay sharp and learn something new every day or stock up on knowledge for the next 105 days with these ...

Did you know that scientists are tracking voles with glittery poop? Or that some clownfish actually shrink in size to stay cool? What about there are dancing, dueling galaxies? If this is news to you, ...