At the Time-Based Art Festival in Portland, from top: A collaboration by Seattleites Zoe Scofield and Juniper Shuey; Holcombe Waller; "Gatz" by Elevator Repair Service; and Nature Theater of Oklahoma...
Color-enhanced scanning electron micrograph showing <i>Salmonella typhimurium</i> (red) invading cultured human cells. (National Institute of Allergy and Infectious Diseases)