fficials in Phoenix voted Thursday to fully adopt a policy limiting access to certain hiking trails in extreme heat. The Phoenix Parks and Recreation board unanimously pushed through the measure, which will close trails at Camelback Mountain and Piestewa Peak from 11 a.m. to 5 p.m. any day an excessive heat warning is issued. The policy was tested at Echo Canyon and Cholla Trail in the Camelback Mountains and the Piestewa Peak trails in the Phoenix Mountains Preserve from July 13 to Sept. 30. The trial run began after nearly a dozen members of the Phoenix Fire Department were sent...