In the 1870s, a French geographer proposed digging a canal from the Mediterranean to flood a low-lying part of the Sahara Desert. He pitched it as good for business and good for local environments, writes Ron Miller at i09. But I can’t help but think of Plagues and Pleasures of the Salton Sea — a documentary about the development, culture, and slow, ongoing destruction of a salty, inland sea that accidentally formed in southern California in the first part of the 20th century.