Telegraph: If the world’s largest, richest environmental campaigning group, the WWF — formerly the World Wildlife Fund — announced that it was playing a leading role in a scheme to preserve an area of the Amazon rainforest twice the size of Switzerland, many people might applaud, thinking this was just the kind of cause the WWF was set up to promote. Amazonia has long been near the top of the list of the world’s environmental cconcerns, not just because it includes easily the largest and most …