California Gov. Gavin Newsom has declared a state of emergency ahead of what is expected to be a Super El Niño. That extra water presents challenges and opportunities to an area in the midst of ongoing drought.

The National Weather Service has issued a flood watch for most of Arizona through Tuesday evening as remnants of Hurricane Polo move inland from the Pacific.

Arizona State University's recent performance, which borders physical theatre and dance, will debut in Paris at UNESCO’s MOST Climate Summit.

While the future of Colorado River as a river source is dim, both state officials and private companies, including Amazon, are stepping up to the plate to help save its remaining reservoirs.

A new study from the University of Washington found that snow measurement tools can produce very different estimates for water availability.

Respiratory virus season is on its way, and health officials say it’s time to schedule seasonal vaccines for flu and COVID-19.

Climate change is prolonging the heat season in Phoenix and around the globe, according to new research from the NASA Goddard Institute for Space Studies.

The number of Latinos who are diagnosed with HIV is on the rise in Arizona. But getting this population the education, care and treatment they need can be tough due to stigma. One ASU researcher aims to change that.

National Public Lands Day was celebrated nationwide with over 700 similar events, according to organizers with volunteer group Natural Restorations, who has hosted the cleanup event on the riverbanks along with the U.S. Forest Service for 11 consecutive years.

Birders marveled at a surprise appearance by a wood stork. Photos of the wading bird, with its white feathers, spindly legs and long, orange beak, made the rounds on social media.

The EPA has determined that no amount of two types of PFAS — known as PFOA and PFOS — are safe in drinking water. But the chemicals are still used widely in manufacturing, PEER says, despite the agency’s assertion they've been phased out.

Flagstaff musician Joshua Hill spoke with The Show about his new album and collaborating with his father, Greg, on stage before he died of dementia.