Winter means a lot of indoor time, and I've learned that science experiments are a lifesaver on those long, cold days. The best part? You don't need anything fancy. Baking soda, vinegar, food ...

Discover how to build a simple solar cell at home using everyday materials! This step-by-step tutorial demonstrates how to ...

"Originally published in ... Popular mechanics ... For the average boy, with few tools, and a desire to learn the principles underlying the construction of the more common electrical ...