American Chemical Society membership includes more than 150,000 individual chemical scientists and engineers in industry, academia, and government. Its major activity is gathering and distributing scientific information: ACS publishes roughly 50 new books annually as well as retaining a back list of more than 500 titles. Its "Environmental Science & Technology" magazine contains scientific studies on such environmental topics as pollution prevention and waste minimization. Its Web site, chemistry.org, features a section on green chemistry.