This week on Arizona Illustrated…On the Line: Frontline health care workers are facing chronic stress that threatens both their physical and mental health. While they take care of the sick, who is looking after them? Pieces of Time: The Arizona State Museum’s photographic collection is a powerful window in time… for the museum’s staff and Arizona’s indigenous people. Arizona’s Rainforest: A towering canopy of evergreen trees and a lush forest floor dripping with an almost continuous rainfall…just north of Tucson. Building the Wall:Border wall construction has some concerned about the health of the San Pedro river in Cochise county and drilling for water near Sasabe, AZ.