Winners of annual environmental impact awards, presented by the Center on Sustainable Communities, the Greater Des Moines Partnership, Metro Waste Authority, Des Moines Water Works and MidAmerican Energy Co., have been announced. Meredith Corp. received the large business award, while Blank Park Zoo received the small business award. The civic award was presented to the city of Johnston and Iowa Rivers Revival. The built environment award was presented to the World Food Prize Foundation and Greater Des Moines Habitat for Humanity. The winners will be honored at a luncheon from 11:30 a.m. to 1 p.m. May 21 at Raccoon River Park Nature Lodge in West Des Moines.