Thermal cameras, which use infrared to detect heat, provide images of temperature. Firefighters can use them to find people in smokey rooms, law enforcement can use them for surveillance, and technicians can use them to detect power faults. Brea Souders used one to take pictures of everyday foods. [via kottke]
Food pictures taken with thermal camera
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Unemployment in America, Mapped Over Time
Watch the regional changes across the country from 1990 to 2016.