Green roofs have become all the architectural rage these days, with each new one claiming to be the biggest of such-and-such area, type, whatever. But you hardly hear of the smallest green roofs.Atom Cianfarani, a Brooklyn artist, introduced what are probably among the tiniest green roofs in New York City Wednesday in her Brooklyn public art exhibit, “Welcomed Guests,” as part of a Department of Transportation urban art program. The two roofs, which sit atop bird nesting boxes, measure 6 inches by 5 inches and 4 inches by 5 inches. Like many larger green roofs, these mini ones also have a root retention layers, a water retention layer, a growing medium, and plants.
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