Dividing the watt-hours of a generator by the watts of the devices you plug into it can tell you (even before you buy) how ...

Hydrogen! It’s a highly flammable gas that seems way too cool to be easy to come by. And yet, it’s actually trivial to make it out of water if you know how. [Maciej Nowak] has shown us how to do just ...

Discover how to build a simple electromagnetic motor and generator using everyday materials in this hands-on science ...