Bridget Dowd/KJZZ
The calendar says it’s winter, but the weather says it’s spring. Even by Phoenix standards.
Claire Caulfield/KJZZ
Joyce N. Boghosian
/
White House
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The findings show families who got water from wells downstream from a site contaminated with PFAS saw higher rates of infant mortality, preterm births and low weight births. -
Dr. Joseph Sirven, KJZZ medical commentator, explains why the Diana Ross classic song, "I'm Coming Out," might make your doctor uncomfortable. -
The FDA plans to add a “black-box warning” to COVID-19 vaccines — that’s the strongest warning the agency can issue. But Will Humble, the Arizona Public Health Association president, says the move isn’t as alarming as it sounds. -
The Arizona Department of Health Services has reported more than 900 cases of whooping cough throughout 2025 — the highest case count in the state in 12 years. -
A new study by Phoenix’s Barrow Neurological Institute is leading to changes in how migraine patients are treated in emergency rooms across the U.S. -
New research shows that mountain regions around the world are warming faster than the lowlands below them. Scientists say that could have big consequences for the Mountain West, where communities rely on snow and ice for their water supply. -
The Tonto National Forest has temporarily closed the lower Salt River area to most horses and pack animals after an equine virus was detected. The closure could last through March. -
Researchers from the University of Arizona have uncovered how a protein complex, known for regulating cell growth and adjusting metabolism, functions in a more complex manner. -
Having chronic pain can qualify you for Arizona’s medical marijuana program. But research led by UCLA says there’s a lack of evidence that cannabis treats chronic pain and most other conditions for which it may be prescribed. -
The Mexican gray wolf has roamed parts of the Southwest for thousands of years. -
An advisory committee to the CDC voted Friday to narrow recommendations for hepatitis B vaccines. But the Arizona Department of Health Services said it will still encourage the vaccine for babies. -
Researchers at University of Arizona have confirmed a new jaguar in southern Arizona. This is the fifth big cat over the last 15 years to be spotted in the area.
