The polar bear, the tiger, the gorilla, the elephant, the lynx, the jaguar, the wolf, the bee, the black grouse… We often hear about these endangered species, their images appealing to us for help. As well as these ad hoc celebrities, we can put a total figure of around 1 million on the number of living species, including countless insects, that are doomed to extinction because of human activities and climate change. This dramatic impoverishment of biodiversity is not only scandalous in...