There are many factors that play a role in whether or not it rains, and research from the University of Arizona shows that human activity such as cultivating agricultural fields may be one of them.
Our stormy season officially starts on Friday, and the forecast is for above-average rainfall and warmer-than-average temperatures. The storms provide up to half of Tucson's annual rainfall.
Ancient rainfall records stretching 550,000 years into the past may upend scientists' understanding of what controls the Asian summer monsoon and other aspects of the Earth's long-term climate, reports a UA-led international team of researchers.
A new clinic addresses matters pertaining to water, endangered species, public lands, climate change, tribal lands and other natural resource challenges that exist in Arizona and the West.
Forecasts favor above-average temperatures and average to below-average precipitation for the Rio Grande/Bravo Basin through July.
With scarce water supplies, a sweltering climate and a rising population, can desert cities such as Tucson and Phoenix sustain us? Three UA experts say they are optimistic.