"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 ...

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?

No matter your age, there's always something so satisfying about learning new, interesting fun facts. Even better when you get to share those tidbits in conversation. Lull, avoided. People, delighted.

Ever been at happy hour and hit those awkward moments where everyone is half-scrolling their phones and half-forcing small ...