Who would Andrew Carnegie have been without fossil fuels?

Steam power was developed in the 1600's in conjunction with coal mining to help pump water out of the mines. It had been known since ancient times that heat could be used to produce steam, which could then do mechanical work. read more

The military-inspired visor blocks glare without blocking your view while enhancing colors for clarity. read more

“We have to decarbonize the electricity sector to decarbonize the transportation sector.” Paulina Jaramillo, Assistant Professor, Carnegie Mellon University. And, oh, how that hand clings to fossil fuels. The United States is significantly dependent in the electricity and transportation sectors—on coal, natural gas, and petroleum. read more