Last year capped a string of historically hot years, driven by long-term warming and changes in rain patterns.

Research shows Americans are increasingly fretting about disasters — and even the end times. Hiding in a cave might actually ...

Phoenix winters are warming, with nights at freezing temperatures nearly vanishing due to urbanization and climate change.

Researcher explains how 'climate change operates through the whole economy.' ...

New research from the University of Arizona reveals that climate change has already reduced U.S. income by about 12 percent.

Here in Arizona, 2025 was our second hottest year on record — with 122 days above 100 degrees and higher nighttime and winter ...

Phoenix Mayor Kate Gallego said she was proud of the way U.S. mayors took the lead on climate issues as the White House ...

PHOENIX (KPNX) — If you feel like allergy season never seems to end, you’re not imagining it. Across the U.S., and right here in Arizona, climate change is making pollen problems worse — and ...

Agriculture, a $9 billion industry in Arizona, is vulnerable to the increased heat and drought that's likely to accompany continued climate change, said a new federally commissioned report. "Farmers ...

Arizona climate leaders and Republic climate reporter Joan Meiners shared book recommendations to provide hope and perspective for 2026. Picks from climate leaders included "The Ministry for the ...

The golden toad, native to Costa Rica, has not been officially seen in over 36 years. A 2022 IPCC report named climate change a key driver in the golden toad's extinction. Researchers debated whether ...