Article Photos: Yosemite takes steps to protect sequoias from fire 6/13

Hazy smoke from a wildfire more than 150 miles away near Yosemite National Park descended Thursday, Aug. 22, 2013, on Reno and the downtown casino district. Washoe County Health District officials issued an air quality alert because the Air Quality Index worsened to the unhealthy zone for sensitive groups, including the elderly and young children. (AP Photo/Scott Sonner)