Scientists now know how to drill deep enough to tap into an energy supply that would power the world for more than 20 million ...

Quaise Energy is deploying futuristic technology and banking on Trump’s support for accessing subterranean heat.

Papago Park features several hikes – perhaps the most distinctive is Hole in the Rock. Nestled in and among the red butte formations of the park, this short but spectacular hike (it is only 0.3 ...