Fotolia, Stockfood Pages 34-35: Getty Images (3), vario images Pages 36-37: Colourbox, Alamy Pages 38-39: Getty Images Pages 40-41: Getty Images, Karsten Bootmann/Evonik Pages 42-43: Getty Images Pages 44-45: Frank Eberhard/FE Photography, Thinkstock Page 48: Frank Beer/RAG-Stiftung Page 66: Karsten Bootm