In 1986, a California city began polishing sewage through constructed marshes; the 307-acre system is now a wildlife sanctuary that has hosted over 300 bird species

• The project eventually became part of the Arcata Marsh and Wildlife Sanctuary, a 307-acre natural area that combines wastewater treatment, habitat restoration, recreation and environmental education.
• Today, the City of Arcata reports that more than 300 bird species have been recorded at the sanctuary, which lies along the Pacific