On the eve of CES 2026 in Las Vegas, we look back at the best products we saw last January to see which ones delivered on ...

Learn how to build a simple solar cell at home using copper tape, plastic cups, and water. This step-by-step science experiment demonstrates how to harness solar energy to generate electricity.

Discover how to create a functional DIY solar panel using a compact disc, copper foil, aluminum foil, and LEDs in this engaging science experiment. Watch as we assemble the components, connect the ...

The Sebastopol couple have made their 1980s home ultra-energy- and water-efficient and outfitted it with nontoxic fixtures.

The Sebastopol couple have made their 1980s home ultra-energy- and water-efficient and outfitted it with nontoxic fixtures.