Discover how to build a simple electric train using just a copper coil, an AA battery, and disc magnets in this step-by-step ...

THROUGHOUT history, humans have found ways to make their lives easier. Arguably, the machine that has most eased the burden of work for humans is the electric motor – a device that transforms ...

We don’t normally think of batteries as being natural, but the parts that make them originally got their start in nature! In this activity you will build a battery using potatoes, lemons, and metal ...