Duckweed covers a marshy waterway at the Veolia Environmental Services Emerald Park Landfill Wetland and Prairie Preserve in Muskego, Wis., during a summer morning on June 25, 2011. The restored wetland provides an abundant habitat for native plants and wildlife. Pictured at bottom is a shadow of the photographer working from an overhead pedestrian bridge. (Photo by Jeff Miller for Veolia ES)
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