One of the challenges with capturing green solar energy is in being able to store that energy for use in times when the sun is unavailable. While the cost of harvesting solar energy has declined ...

A recent breakthrough in aluminum-battery research could eventually replace lithium and alkaline batteries: Hongjie Dai, professor of chemistry, and his colleagues at Stanford University created ...

: Recently, you wrote about replacing a water heater's drain valve. A friend told us that we should also check the anode rod. Is this worth checking? If so, how do we do that? A: An anode rod is a ...

Nearly every home has one. Water heaters are ubiquitous in buildings, though they are not all the same. In most cases we heat and store water in a tank which has either electric elements or a gas ...

Nearly every building has a water heater. While many are operated by resistance-type heating elements, the majority of them are gas fired. That sheet metal cylinder you see conceals thermal insulation ...