Climate Change

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tall building
Several cities across Arizona have announced efforts to reduce greenhouse gas emissions, in an effort to curb the impact of climate change. And UA assistant professor Jonathan Bean says this conversation needs to expand from focusing on modes of transportation to include the buildings we’re in.
Aug. 18, 2021
The below-grade Papago Freeway in central Phoenix, built on what used to be Moreland and Culver streets.
With the Senate's passage of a physical infrastructure bill, Congress will now take up a broader infrastructure bill.
Aug. 11, 2021
Raúl Grijalva
A recent report on climate change says the problem has reached a crisis level and will have consequences for billions of people.
Aug. 10, 2021
Middle Fire Arizona
New research looked at one watershed in the Sierra Nevada Mountains in eastern California to see how climate change interacts with plants and the other vegetation that can become fuel for wildfires.
Aug. 10, 2021
Antelope Point Public Launch Ramp at Lake Powell
Low water levels at Lake Powell have made launching a houseboat nearly impossible, but there is plenty of opportunity for recreation at the lake. Park Superintendent William Shott says that In spite of the drought, the lake has plenty of water and thousands of miles of shoreline to explore.
Aug. 9, 2021
The Arizona sun behind a palm tree
Heat waves over the West, the continued depletion of the Colorado River Basin, and the second worst drought in the last 1,200 years — in the recent U.N. Intergovernmental Panel on Climate Change report, experts say with increased confidence that these phenomena are linked to humans.
Aug. 9, 2021
The "Earth thermometer" sculpture
Hundreds of companies have signed onto letters to government leaders, encouraging them to take action on climate change. The letters to President Joe Biden, Gov. Doug Ducey, Sens. Kyrsten Sinema and Mark Kelly and others urge a goal of cutting greenhouse gas emissions by at least 50% below 2005 levels by the end of the decade.
Aug. 9, 2021
man using backhoe
A trade group representing contractors launched a new initiative Tuesday to push for more environmentally friendly construction.
Aug. 3, 2021
Navajo Nation
The largest Native American reservation in the U.S. is continuing to struggle with drought conditions. The majority of the Navajo Nation is in extreme or exceptional drought.
Jul. 20, 2021
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


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