The Chesapeake Bay's sad state has yielded on positive result: the bay ecosystem inspired the University of Maryland's "WaterShed" house, which won the Department of Energy's Solar Decathlon over the weekend.
You can take a tour of the house above. WaterShed features solar panels, a green roof, a rain harvesting system, solar thermal water heating, sink and shower water filtration, "constructed wetlands" instead of gardens, and an indoor waterfall (!) that helps control humidity.