Silent Spring, written by Rachel Carson, an American popular science writer, is regarded as the first work of modern environmental protection movement in the West  Taking DDT as the main case, this book draws the conclusion that chemicals are seriously harmful to human health and the earth's environment
The publication of this book has triggered a national debate in western countries
Tianjin Chemical Plant produced 1000 tons of DDT last year, most of which were exported to Africa to help local residents fight malaria