Biden's $400B vaccination plan Galaxy S21 preorders Google Doodle celebrates basketball inventor Drivers License breaks Spotify records WandaVision review Oculus Quest multiuser support Track your stimulus check

This sand castle can support the weight of a car

How can a flimsy little sand castle hold up an automobile? This video from Practical Engineering shares the secret.

Sand castles aren't exactly the most secure structures out there. Something as light as a Pomeranian's paw can take them down like an earthquake, and a wave of a kid's Popsicle stick can send them crumbling.

That's why a video from the Practical Engineering YouTube account posted Monday is so fascinating. In a little less than eight minutes, the narrator delivers a master class on how to reinforce simple soil by layering in stronger materials. Even a few layers of something as light as paper towels help him make a small sand tower strong enough to support a brick. And as his layering materials toughen up, so does the strength of his sand blocks.

By the end of the video, you may still not feel safe resting a car on a block of sand, but you may pick up some tips to help your kid build a better castle on that next trip to the beach.

(Via Popular Mechanics)