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More Arizona Environment Transportation Stories

German students David Sipple, Milan Daus, Stefan Zins and Davis Rösch have been riding bicycles all around Tucson during their visit.

Tucson, an Urban Classroom for German Students

University students visit the city to learn about global conditions

Arizona Highway 89A north of Flagstaff closed by mudslide Aug. 9, 2015.

Flash Flood, Mudslide Close Northern Arizona Highway

State Route 89A shut down 30 miles north of Flagstaff after rare tornado, heavy rain hit area.

Hybrid Cars Make 'Clean Air Blue Skies' Eligibility

Six vehicles designated by state transportation officials to get plates allowing single-occupancy in HOV lanes.

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