You'd think that things like disasters, or the purity of childhood, or even milk, let alone water or air, would be sacred. But no. Corporations have no built-in limits on what, who, or how much they can exploit for profit. In the fifteenth century, the enclosure movement began to put fences around public grazing lands so that they might be privately owned and exploited. Today, every molecule on the planet is up for grabs. In a bid to own it all, corporations are patenting animals, plants, even your DNA. Around things too precious, vulnerable, sacred or important to the public interest, governments have, in the past, drawn protective boundaries against corporate exploitation.