China has experienced a huge amount of growth in the last 30-40 years, due in no small part to their vastly-increased manufacturing capability. Some of that has been aided by currency manipulation and government intervention, but a lot of it has just been an increase in capacity. While that has brought more proseperity to China, it has also brought a huge amount of pollution, through a lack of environmental controls or ignored environmental regulations. There is hope that China can change, for their own sake, as well as the world’s. One child interviewed in this claimed to have never seen a star in the sky, which is just heartbreaking.