New to This Edition

This edition includes many new and updated topics, including the following:

• science and the scientific method
• phytoremediation of hazardous waste
• Mexico's butterfly forests
• environmental chemistry
• sustainability in economics
• market-based incentives for environmental protection
• infectious and emerging diseases, including HIV, foot and mouth disease, and BSE
• land-use policies, including new national monuments and roadless area protection established during the Clinton administration
• genetic engineering, including the StarLink corn issue, and a figure explaining a gene transfer method
• the 2001 worldwide ban on persistent organic pesticides (POPs)
• sustainable forestry, certified wood, and non-timber forest products
• human-caused climate change, including contrasting points of view
• the ozone "hole" and the status of Cl and Br emissions
• MTBE contamination in groundwater
• nuclear energy in the United States and current U.S. energy policy, and energy efficiency
• urban sprawl and smart growth
• wise-use groups and current U.S. environmental policies

Web Exercises
Now each chapter includes one or two web exercises that challenge students to actively investigate data sources on the World Wide Web. In these exercises, students are given specific directions to guide them in mapping, graphing, or comparing trends in important environmental indicators.

Figures, Data, and Maps
This edition has approximately 50 new photographs, 15 new figures, and 55 revised figures. The most current data available is used in graphs and tables, and in most cases, dates are provided so that students can consider whether the information might have changed and why. We also use dozens of current maps to show the global interconnections of resources and problems.

Introducing a New Co-Author
With this edition, a new author is joining Environmental Science, A Global Concern. Mary Ann Cunningham teaches physical geography, geographic information systems (GIS), and environmental studies at Vassar College. She is not entirely new to the book, having written and reviewed a variety of aspects of the book starting with the first edition in 1983, as well as creating the current Environmental Global Issues web page, found on the Online Learning Center for this book. Mary Ann's research and teaching interests include grassland environments and grassland birds, rural land-use policies, applying GIS and spatial data to landscape-level environmental problems, developing field experiences for students, and encouraging students to develop a sense of personal responsibility and opportunity in their environment.