Planet China: Twelfth in a series about how Beijing’s trillion-dollar development plan is reshaping the globe—and the natural world. HAJDÚSZOBOSZLÓ, Hungary—The audience sat patiently through the presentations about the cluster of battery factories going up nearby. They listened to descriptions of the hazardous chemicals the plants will use, their huge water withdrawals and energy demands. When it came time for questions, people began shifting in their chairs and standing up, making the...