The Maryland-based giant acquires the Houston-based operator of geothermal plants in Sonoma and Lake counties. It’s said to be one of the largest power-generation deals in U.S. history.

The earthquake swarm that has shaken San Ramon for more than two months appears to be over, scientists said Monday. But when ...

Electrical equipment is particularly susceptible to lightning damage due to the conductive copper cabling used in electrical ...

At 210,000 km/h, an interstellar comet does not give engineers and astronomers the luxury of slow iteration. Every observing ...