Lake Okeechobee's treasures and toxic muck

Conservationist Marjory Stoneman Douglas once famously grumbled that Lake Okeechobee, the liquid heart of her beloved Everglades, had been poisoned by man's careless disposal of "pesticides, fertilizer, dead cats and old boots."

She didn't know about the 1920s steamship, rusty anchors, tractor tires, fishing-boat motors, settlers' stovepipes, Native American tools and jewelry, and the bones of man and beast dating back thousands of years. All were hauled from the lake bottom this summer.