We tested six models from top manufacturers and evaluated dozens more to find the best washing machines for laundry day.

From floating mega-turbines to AI-powered micro wind systems, these breakthroughs redefined what wind energy can achieve.

The theory behind hydropower is very simple: water obeys gravity and imparts the gained kinetic energy onto a turbine, which subsequently drives a generator.  The devil here is, of course, in all ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Suzanne is a content marketer, writer, and fact-checker. She holds a Bachelor of Science in ...