Mao Da is now the director of Toxics-Free China and the policy advisor of China Zero Waste Alliance. He holds a PhD degree in environmental history. Over the past 10 years, he has been actively working with different environmental NGOs for their efforts to reduce pollutions of wastes and toxic chemicals, and promote environmental health. In the academic area, he has published a book on the history of waste disposal in the ocean in the United States and finished a post-doctorate report on the history of social debate on dioxin. Currently his work focuses more on the promotion of zero waste strategy, sound management of chemicals, and plastic pollution prevention.