A bamboo spider rides high FANNING out from the sodden delta of the Yangtze, and southward to the flanks of the Nanling mountains, over 6m hectares of emerald bamboo groves—one-fifth of the world’s reserves—flourish in China. Giant pandas nibble the softest shoots. Around 40bn pairs of disposable chopsticks are made from bamboo twigs annually in China, for use with everyday meals.