Here, Pasadena-based startup Heliogen is perfecting ... like the one Heliogen is testing in Lancaster, and others in the works around the globe — could come into play. Changes to state ...

A bulldozer works on a growing pile of broken concrete on the North 710 Freeway stub in Pasadena on Monday, Oct. 2, 2017. The piles of broken concrete from the 210 repaving project are being ...