As President Trump doubles down on fossil fuels, the U.S. and China offer competing visions for the future of energy.

Could adding a home solar system could actually increase your home's resale value? The answer is yes, but it's complicated.

Scientists have developed a new multi-layered metalens design that could revolutionize portable optics in devices like phones ...

Lockheed Martin is developing new technology to allow F-35 fighter pilots to control drones. WSJ toured the company’s Fort Worth, Texas, facility to see the jets and futuristic tech.