"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 ...

Below, you’ll discover all kinds of fascinating trivia including which country has more pyramids than any other place in the ...

Impress your kids with fun facts that are both age-appropriate and surprising. Did you know that ketchup was once sold as medicine in the 1800s, or that Earth has more trees than stars in our galaxy?

The ocean makes up the majority of the Earth's surface, so it makes sense that 95% of our seas are still unknown to us—there's just so much to explore. And we know even less about the deepest parts, ...