Discover how to build a simple solar cell at home using everyday materials! This step-by-step tutorial demonstrates how to repurpose an aluminum can, a CD, copper wire, toothpaste, lemon juice, and a ...

Learn how to create a simple water wheel free energy device using basic materials like plastic bottles, spoons, or wood. This ...

Climate change shapes where and how we live. That's why NPR is dedicating a week to stories about solutions for building and living on a hotter planet. Our homes use a lot of energy. The huge amounts ...