Independent: It all started with Sting, this fad for owning one’s very own patch of tropical rainforest, though it is probably unfair to blame him entirely for creating the boom industry that buying up forests piecemeal has become. It is 20 years since the musician first set foot in Brazil and pledged to fight the cause of the Yanomami Indians, setting up the Rainforest Foundation to protect forests and their indigenous inhabitants. Today, protecting forests has acquired a more …