Engine with 2 human powers.

Jupiter's gravity keeps most asteroids and space bodies away from Earth.

Without it, Earth would probably be uninhabitable for humans. Mad respect to Jupiter.

Extremely high rope friction.

A mini generator from what an engineer can find at home.

Amazing and fascinating geometric puzzles on magnets.

Making a rocket out of disinfectant.

How to assemble a levitating spinner at home.

A pool table with a gyroscope on a cruise liner for automatic leveling.

Huge lens VS egg.

Checking the stability of the layout of buildings.

All the laws of physics are broken.