Waterwheels might be considered a bit old-school, but thanks to researchers they're coming back en vogue due to their ability to produce zero-carbon electricity. The continuous power flow from waterwheels are currently supplying power in a small village in India. Next stop - your community?!

For more details: https://www.theguardian.com/environment/2025/jan/17/how-climate-friendly-waterwheels-are-coming-around-again

📸: Michael Erhart