Climate Change

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The flash flood that carried a Prius down a Flagstaff street reached the size of a 100-year flood event, according to Coconino County officials. Another 100-year flood happened in the same area in 2018. That frequency has climate scientists alarmed.
More Climate Change Coverage
Jul. 20, 2021
Sonoran Solar
Working with state leaders, Mexico plans to build the world’s eighth-largest solar farm in neighboring Sonora that’s expected to be up and running by the end of 2023.
Jul. 19, 2021
The Arizona sun behind a palm tree
President Joe Biden has brought the U.S. back into the Paris Climate Agreement, and there are efforts to reduce carbon emissions in an effort to slow climate change. But climate scientist Kimberly Nicholas says we all have a part to play in that.
Jul. 16, 2021
volunteers rescue whale
Last week, officials and residents in Puerto Peñasco, or Rocky Point, worked together to save a beached whale. Just days later, a whale initially believed to be the same one was found dead in the same area. But scientists now say they were two different whales and are concerned about their unseasonal appearance in the region.
Jul. 14, 2021
Here in the desert, we can always use some rain — and Armin Sorooshian can make it happen. Sort of. Sorooshian is a chemical and environmental engineering professor at the University of Arizona who researches the effect of aerosols on the environment.
Jul. 14, 2021
Flagstaff sign
The City of Flagstaff has begun a 60-day public review process for an amendment to the city’s Regional Plan 2030. One of the new policies would be to “improve the ability of vulnerable community members to adapt and thrive amidst the pressures of climate change.”
Jul. 14, 2021
downtown phoenix trees
The Tree Equity Score maps tree cover in cities, although the president of American Forests says those maps are also generally maps of income and race, as well. This mirrors a national trend.
Jul. 12, 2021
Tomás Rojo
Sonoran authorities say they’ve arrested a second suspect in the murder of Tomás Rojo, a Yaqui activist and leader who went missing in May.
Jul. 9, 2021
a tree sprouts up
There is a growing effort in the Sonoran capital Hermosillo to plant more trees and create more green spaces in the city. And many are pushing for those trees to be native species. A new nursery is catering to that effort.
Jul. 8, 2021
drought map
Monsoons have arrived in neighboring Sonora, Mexico. But so far the rain hasn’t been enough to lift the state out of severe drought.
Jul. 8, 2021
Salt River
Arizona experienced the second-driest runoff season on record in 2021, but Salt River Project reservoirs are still in good shape.
Jul. 7, 2021
Razorback sucker
The U.S. Fish and Wildlife Service said Tuesday it plans to propose reclassifying a rare Colorado River Basin fish called the razorback sucker from endangered to threatened status after a multiyear and multistate effort throughout the Southwestern U.S. to replenish its populations.
Jul. 7, 2021
downtown phoenix trees
Phoenix is looking for input on its climate action plan. An online survey that can take as little as five minutes to complete asks residents and business owners to rank priorities and activities to limit climate change.
Jul. 6, 2021
KJZZ logo generic card
While Arizona’s farmers have been preparing for extreme drought conditions, water shortages in some areas have reached drastic lows. Through KJZZ’s Q&AZ Project, a listener asked: Why has San Carlos Lake behind Coolidge Dam gone dry?
Jul. 2, 2021
Nancy Selover
As the debate continues about how to address climate change, one of the most visible faces on those issues is moving on. Nancy Selover has been Arizona’s state climatologist since 2007; she’s also been a research professor at ASU. This spring, she retired from both posts.
Jul. 2, 2021
Lightning in Phoenix
While some Arizonans are standing by for legalized sports betting, others are anticipating fantasy monsoon.
Jun. 28, 2021
traffic on Interstate 10 in Phoenix
Fewer greenhouse gasses were emitted globally over the last year, as people drove and flew less during pandemic-related lockdowns. But new research suggests scientists may have underestimated just how big of a drop there was.
Jun. 28, 2021
migratory grasshopper
A drought blanketing the U.S. West is drying up waterways, sparking wildfires and leaving famers scrambling for water. Next up: voracious grasshoppers.
Jun. 24, 2021
Welcome to Mesa Arizona sign
Mesa has adopted a climate action plan to lower the city’s climate impact and plan for sustainable growth.
Jun. 22, 2021
Car temperature
An excessive heat warning and an air quality alert continues through Sunday night for much of Arizona. Forecast highs this weekend in the Phoenix metro region will be above 115 degrees, according to Phoenix-based meteorologist Austin Jamison.
Jun. 19, 2021


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