A Scottsdale man has been arrested after police say he spliced into his neighbor's gas utility pipe.

A group of environmentalists is challenging the federal government's renewal of an operating permit for a northern Arizona coal mine.

Navajo Nation President Ben Shelly once again has vetoed money to fund a commission aimed at developing green jobs.

Disposable plastic water bottles soon won't be sold at the Grand Canyon.

Environmental regulators are encouraging people in Camp Verde and on the Yavapai-Apache Nation to drop off unwanted electronics at a recycling event.

Energy Secretary Steven Chu has selected a team from the University of New Mexico and Arizona State University to compete in next year's solar decathlon.

Using solar energy as a power supply seems like an obvious fit for Arizona. Here in the valley, we typically get nearly 300 days of sunshine a year.

President Barack Obama announced Thursday a pair of new measures designed to advance the "all of the above" energy agenda that he laid out in Tuesday's State

A massive explosion on the sun's surface has triggered the largest radiation storm since 2005. It hit the earth Tuesday morning -- and though you probably

We've heard the benefits of going green when it comes to saving money on utilities, but is it actually feasible to make your own home energy efficient? FOX

Veterinarians at SeaWorld San Diego are nursing a sick sea turtle back to health.

Arizona Public Service Co. customers could see a 1 percent drop in their average bill this year and no base-rate increases until 2016 if those changes are

There is a long running joke about how many people it takes to change a light bulb, but changing a light bulb isn't so simple anymore. New efficiency standards

A brown haze is hovering over the valley. This haze is part of an inversion layer, which is typical this time of year because more people are burning their

Thousands of sunflowers, rows and rows, dot the landscape near the heart of downtown Phoenix.