I've long thought of portable power backs as having two purposes—providing power when traveling or when the power's out. Turns out these batteries are worth using around the house, even when the power ...

Valhalla Mobile Home Park has hundreds of residents, some of whom can't live for more than a few hours without power. "I had heat in one room of the house so I survived," said Tom Madsen ...

While Disney's volumetric power isn't ideal, it's the most feasible yet. The researchers built a full-scale room to demonstrate the technology. The walls, floor, and ceiling are all made of ...