White Roofs Please
Lamm snapped these images with a thermal camera on a five-hour whirlwind trip from Pittsburgh. He teamed up with John Frederick, a heat island expert at the University of Chicago, who explained exactly why some parts of the city are hotter than others. All this heat we’re trapping isn’t merely an uncomfortable inconvenience. Each extra degree adds to air conditioning bills and increases energy consumption; it also raises health risks for the elderly and vulnerable. Painting more roofs white would help, as would more trees. Cities should also think about new colors for pavements, as we discussed here.