PITTSBURGH, Sept. 9, 2019 /PRNewswire/ -- "Stirling engines are not used to their full potential," said an inventor from Pasadena, Calif. "I recognized an efficient way to improve upon their design.

Earlier this week, we wrote about setbacks at some Silicon Valley companies with new solar technology. They’re built on real science and work in the labs, but they’re grappling with the real-world ...