Conductive concrete melts ice

A new type of pavement developed at the University of Nebraska could keep bridges and other surfaces clear during inclement weather without using heavy equipment or chemicals. The product is a concrete mixture that conducts just enough electrical current to melt ice and snow, while being safe to touch. The material is composed of 20 percent carbon and steel byproducts from industrial processes.

Glass roads?

“There’s 25,000 square miles of road surfaces, parking lots and driveways in the lower 48 states. If we covered that with solar panels with just 15 percent efficiency, we’d produce three times more electricity than …