At least four hikers died in Arizona, where on Sunday Phoenix set a record for the date of 118 degrees Fahrenheit.

Power plants may not have enough access to natural gas on as many as 14 days this summer to produce electricity in Southern California during certain peak-use times.

More than 2,000 families have been forced to temporarily relocate as a result of a gas leak detected on Oct. 23.

A steady stream of natural gas seeping out of the pipe casing in a well in Southern California may take three to four months to plug.

Warren Buffett highlights how his Berkshire Hathaway Inc. utilities make massive investments in renewable energy. Meanwhile, in Nevada, the company is fighting a plan that would encourage more residents to use green power.