"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 ...

Learn these interesting facts about pi before Pi Day on March 14 Facts about pi you don’t want to miss How much do you really know about pi? Sure, you’ve heard about it in math class—potentially ...

The Solar System is a weird place filled with incredible physics and geological oddities that often break down in human terms. The way we learn the order of the planets is the classroom version of ...

Talk about a bizarre feature of the human body: If you happened to swallow a razor blade, your stomach acid would dissolve it. Acids are ranked on a scale from zero to 14—the lower the pH level, the ...

The natural world rarely behaves the way we expect. Physics bends intuition. Biology ignores neat categories. Space refuses to be reasonable. Some facts sound like they were invented for a science ...