The climate and sustainability program at Discovery Partners Institute at the University of Illinois Urbana-Champaign wants to find ways to get people heat information that is more specific to particular locations at particular times, rather than a static kind of map.

State health officials say they’ve confirmed nearly a thousand COVID-19 cases in the last week. At the same time, lots of Arizonans are starting to think about getting flu and COVID-19 shots for the year.

A report by Colorado River experts found that a federal plan for water cuts could bring Colorado River use by California, Arizona and Nevada to historically low levels.

Giant sequoias only grow naturally in California today. But they once ranged as far east as Colorado, Wyoming and Nevada, before the climate turned drier and pushed them into their current, narrower range.

COVID-19 cases have been on the rise in Arizona, but public health officials say it shouldn’t be cause for alarm.

The variable climate patterns in the Pacific Ocean are associated with changing weather patterns globally. UA professors contributed to a study that found they are growing more extreme as greenhouse gas emissions are contributing to climate change.

Katie Hobbs and Andy Biggs, the Democrat and Republican nominees for governor, have wildly different plans for Arizona’s water future. That means the choice voters make this November will point the state in one of two approaches when it comes to managing the state’s water supply: conservation or augmentation.

The National Weather Service has issued another extreme heat warning for the Phoenix area. This one is in effect Tuesday through Thursday.

So-called process based restoration (PBR) has a number of ecological benefits. But it can make ecosystems more resilient to wildfires when they come, and better able to recover in their wake.

The wolves nearly went extinct before they were reintroduced to Arizona and New Mexico in 1998. Now, there are roughly 300 Mexican gray wolves in the region.

The Trump administration says its "Foundry School" is a collaboration between eight universities to provide a training program for onshoring advanced manufacturing like semiconductors.

Phoenix has now covered 200 miles of city streets with cool pavement. The city has been applying the light, reflective coating since 2020 with the goal of reducing the urban heat island effect.