Getting a drink of water would be very different if you were the size of a doll.

Does the sand all pile up in the same way?

Find order in well-mixed chaos.

What happens when you double the size of a chair?

Ready for liftoff? Launch rockets with your own launcher!

These tiles aren't really crooked–they just look that way.

Build an arch that supports itself.

Use your voice to make visible patterns in sand.

See yourself as others see you.

This reflector has you cornered: It always sends light back in the direction from which it came.

Cardboard gets its Amazonian strength from simple geometry.

Discover why your favorite cat videos don't leak out of optical fibers.