CBS News looked at the cost of producing coal, gas, nuclear, wind and solar energy to determine which is the cheapest.

For over a century, U.S. capitalism has inspired innovation, attracted new businesses, and improved its citizens’ quality of life.

Geothermal energy is a form of clean energy that is less prominent compared to renewable power sources such as wind or solar — but it's slowly gaining steam in diverse ways, including in a novel ...

APS is shifting from a "zero-carbon" to a "carbon-neutral" goal by 2050, aiming to balance emissions rather than eliminate them as power demand grows. The company is also backing away from its 2030 ...