Will people continue to hike and bike the Arizona Trail? Extreme weather and land use challenges may test the limits.

I first heard about the Arizona Trail when a friend from my bike racing days set a new women’s self-supported “Fastest Known Time” riding the (now retired) 750-mile route. Elizabeth Sampey had been ...

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 stretching them out longer ...

Portions of Arizona face a freeze warning for early Friday morning, as temperatures are expected to plunge into the 20s. Communities across the state are confronted with heightened risks to ...

Over seven weeks this fall, Arizona Republic climate reporter Joan Meiners is biking the length of the 850-mile Arizona Trail from Utah to Mexico to report on how climate change is affecting the state ...