Several organizations help private landowners create legal protections against commercial development on their lands, which aren‚Äôt just those our houses¬†are on¬†but include¬†commercial, industrial and agricultural lands, too. Pictured: The Gwynedd Wildlife Preserve in Ambler, Pennsylvania. It‚Äôs fields are being restored and protected after over¬†a century of agricultural use. (Photo courtesy amdougherty/Flickr)