Carbon dioxide levels in atmosphere surpass key milestone

Climate scientists say it's "like watching a train barrel down the track towards you in slow motion. It’s terrifying."

Arizona Gov. Ducey in Israel for trade, water, security talks

Arizona Gov. Doug Ducey will meet with Prime Minister Naftali Bennett and President Isaac Herzog as well as former Prime Minister Benjamin Netanyahu. He also will meet with U.S. Ambassador to Israel Thomas Nides.

US judge rejects request to block work for new Arizona copper mine

U.S. District Judge James Soto refused to issue a temporary restraining order and dismissed a lawsuit filed by the Tohono O’odham, Pasqua Yaqui and Hopi tribes and the group Save the Scenic Santa Ritas.

Tallest North American building made from shipping containers to open in downtown Phoenix

The Ida on McKinley, which is set to open soon, stands in the area of 3rd Street and McKinley in Downtown Phoenix, and it features a number of sustainability features.

Tempe Town Lake: 60s-era ASU alum helped to transform the dry Salt River into an urban oasis

For much of the 20th century, the stretch of Salt River in the Phoenix area was a dry riverbed that was considered to be an eyesore. Thanks to a group of ASU students, a stretch of the Salt River in Tempe has now become a point of pride for the Valley.

Lake Powell, producing energy to millions, majorly threatened by drought conditions

Lake Powell serves as an energy provider to millions of people and because of the major drought and quickly dropping water levels, that energy source is threatened. We take a look and what's being impacted and what's being done to curb this crisis.

Hotter nights due to climate change will cost us sleep, study suggests

By the year 2099, hotter “suboptimal temperatures” may reduce sleep by 50 to 58 hours per person each year, according to a new study of adults from around the world.

Tucson may forego some water to help keep Lake Mead level up

Tucson signaled it may forego part of its allotment of Colorado River water delivered by the Central Arizona Project aqueduct in order to help forestall a shortage declaration for Lake Mead that would trigger mandatory reductions.

Exro Technologies, newest electric vehicle parts maker, welcomed in Mesa

A company you’ve probably never heard of, Exro Technologies, believes it can make electric vehicles cheaper and more efficient, and its main headquarters is in Mesa, Arizona. It's also hiring!

Lake Mead murder mystery: Bodies found due to low water levels

A 22-year long drought is renewing interest in the mob's connections to Las Vegas. Two bodies have resurfaced at Lake Mead, about 40 miles from the Las Vegas Strip.