A tiny near-Earth asteroid animation courtesy of University of Arizona astronomer Vishnu Reddy.

Wildlife officers released 20 bighorn sheep into the Catalina Mountains early Tuesday morning, bringing the bighorn population there to 85 animals. Video by Doug Kreutz, Arizona Daily Star.

Marcia Roberts and son Gordon Austin continue long tradition at last aid station during El Tour. Video by A.E. Araiza

With eight miles to go, some cyclists stop at the last aid station while others keep going. Video by A.E. Araiza

Bicyclists begin the 106-mile portion of El Tour as they leave the downtown area. Video by A.E. Araiza

Students, parents, staff and the Living Streets Alliance spent recent weekend giving the walk to Pueblo Gardens Elementary a new, more playful look

Neighbors, students and parents paint the Menor Stravenue at Living Streets Alliance event. Kelly Presnell / Arizona Daily Star

University of Arizona research scientists keep tabs on plant and animal life and air quality at the highest reaches of the Santa Catalina Mountains northwest of Tucson. A new grant extends their work to focus on human impacts. Arizona Daily Star (2016)

Motorists roll down their windows and roll up their sleeves for a quick flu shot in Oro Valley. Video by A.E. Araiza

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