Bedtime Math

A burrito is a tortilla wrapped around rice, beans, meat, and shredded cheese. Well, Dylan Grosz wanted to know how big a burrito he could order at the restaurant Chipotle. Every day he ordered 5 burritos with different fillin...

You know those white or yellow lines painted on the road? How long do you think each dash is? Take a guess…they’re actually 10 feet long, and 30 feet apart! Because we look ahead at dashes that are farther away, they look shorter. Road lines were invented by accident i...

If only we humans could sleep as well as animals. They somehow catch z’s even when they’re on the move. Water animals who need to breathe air have no choice: they can’t just sink to the ocean floor while napping! So dolphins let 1/2 of the brain sleep while the other half is awake, with one eye open. Seals sleep this way too, leaving one flipper ready to flap. Meanwhile, bird...

It’s fun to make things out of Lego, like cars and robots. Well, imagine if you made a Lego factory that could make Lego cars! This factory isn’t the speediest, but it really runs on its own. So if it’s bedtime and you need 100 ca...

We just love this guy’s hairdo. He’s an Egyptian vulture, also known as “the Pharaoh’s chicken” after Egypt’s long-ago kings. Aside from his crazy feather bedhead, he’s very smart. Egyptian vultures are one of the few birds that use objects as “tools.” They can hold a pebb...