Exploring how the $50 solar water heater works and how you can build it yourself for affordable home heating. #SolarHeater ...

Taking a hot shower can literally mean pouring money down the drain. The average American household spends almost $300 pear ...

Photovoltaic efficiency has come a long way over the decades, but there’s always room for improvement. A new study analyses how to make solar thermoelectric generators, or STEGs, more efficient by ...