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A UA team shows that evolution is driven by dependency on other species within ecological communities – testing a long-held idea of the late UA professor George Gaylord Simpson.

On Earth Day, many pause to think about the state of our natural world, from climate change to plastic pollution and endangered species. But students researching in the Department of Soil, Water and Environmental Science think daily about how to tackle environmental challenges, including water quality issues, greenhouse gas emissions and mining reclamation.

Vertical farming offers opportunities to grow more crops on a smaller footprint, especially in urban areas. It also presents unique educational opportunities.

Bordered by irrigation canals, restoration site Chausse is meant to replicate a bend in the Colorado River, with marshy areas and native vegetation. Data is currently being collect in this area by Arizona scientists.