Just read the headlines. Whether it’s global warming, arctic drilling, or expanding industrial nations, the news is filled with stories about environmental issues. To understand the news, you have to understand the science. With Botkin and Keller’s Fifth Edition of Environmental Science,you’ll have the opportunity to develop a firm foundation of scientific knowledge, so you can think through environmental issues and make your own decisions regarding the environment.

There’s much more to explore online!

You can use your knowledge of environmental science to explore real and pressing environmental issues online with the Student Companion Site at www.wiley.com/college/botkin. The Student Companion Site features:

•  Critical Thinking Issues:These guided questions and web-based research questions give you the chance to critically appraise such issues as preserving the coral reef or critiquing the Gaia hypothesis.
• Regional Essays and Interactive Map of the World: These essays allow you to explore interesting issues and examples of key environmental topics.
• Virtual Field Trip Activities: These activities identify and describe key issues in environmental science and lead you to relevant websites and local facilities, such as wastewater treatment facilities or power plants, so you can explore proposed solutions to environmental problems.
• Environmental Debates:Present two sides of a contentious issue affecting the environment. Links to key websites and questions help you gain a sophisticated appreciation of important issues.
• Online Quiz Questions:These quizzes are invaluable in preparing for tests and exams. They also allow you to email your answers and responses directly to your professor.

Trained in physics and biology, Professor Botkin is a leader in the application of advanced technology to the study of the environment. The originator of widely used forest gap-models, he has conducted research on endangered species, characteristics of natural wilderness areas, the biosphere, and global environmental problems. During his career, Professor Botkin has advised the World Bank about tropical forests, biological diversity, and sustainability; the Rockefeller Foundation about global environmental issues; the government of Taiwan about approaches to solving environmental problems; and the state of California on the environmental problems; and the state of California on the environmental effects of water diversion on Mono Lake. He served as the primary advisor to the national Geographic Society for its centennial edition map on " The Endangered Earth." He directed a study for the states of Oregon and California concerning salmon and their forested habitats.

He has published many articles and books about environmental issues. His latest books are Beyond the Stoney Mountains: Nature in the American West from Lewis and Clark to Today (Oxford University Press), Strange Encounters: Adventures of a renegade Naturalist (Penguin/Tarcher), The Blue Planet (Wiley), Our Natural History: The Lessons of Lewis and Clark (Oxford University Press), Discordant Harmonies: A New Ecology for the 21st Century (Oxford University Press), and Forest Dynamics: An Ecological Model (Oxford University Press).

Professor Botkin was on the faculty of the Yale School of Forestry and Environmental Studies (1968-1974) and was a member of the staff of the Ecosystems Center at the Marine biological Laboratory, Woods Hole, MA (1975-1977). He received a B.A. from the University of Rochester, an M.A. from the University of Wisconsin, and a Ph.D. from Rutgers University.

Edward A. Kellerwas chair of the Environmental Studies and Hydrologic Sciences Programs from 1993 to 1997 and is Professor of Earth Science at the University of California, Santa Barbara, where he teaches earth surface processes, environmental geology, environmental science, river processes, and engineering geology. Prior to joining the faculty at Santa Barbara, he taught geomorphology, environmental studies, and earth science at the University of North Carolina, Charlotte. He was the 1982-1983 Hartley Visiting Professor at the University of Southampton, a Visiting Fellow in 2000 at Emmanuel College of Cambridge University, England, and recipient of the Easterbrook Distinguished Scientist award from the Geological Society of America in 2004.

Professor Keller has focused his research efforts into three areas: studies of Quaternary Stratigraphy and tectonics as they relate to earthquakes, active folding, and mountain building processes; hydrologic process and wildfire in the chaparral environment of Sothern California; and physical habitat requirements for the endangered Southern California Steelhead trout. he is the recipient of various Water Resources research Center grants to study fluvial processes and U.S. Geological Survey and Southern California Earthquake Center grants to study earthquake hazards.

Professor Keller has published numerous papers and is the author of the textbooks Environmental Geology, Introduction to Environmental Geology and (with Nicholas Pinter) Active Tectonics (Prentice-Hall). He holds bachelor's degrees in both geology and mathematics from California State University, Fresno; an M.S. in geology from the University of California; and a Ph.D. in geology from Purdue University.

2. Science as a Way of Knowing: Critical Thinking about the Environment.

3. The Big Picture: Systems of Change.

4. The Human Population and the Environment.

5. The Biogeochemical Cycles.

6. Ecosystems and Ecosystem Management.

7. Biological Diversity.

8. Biogeography.

9. Biological Productivity and Energy Flow.

10. Ecological Restoration.

11. Producing Enough Food for the World: How Agriculture Depends on Environment.

12. Effects of Agriculture on the Environment.

13.Forests, Parks, and Landscapes.

14. Wildlife, Fisheries, and Endangered Species.

15. Environmental Health, Pollution, and Toxicology.

16. Natural Disasters and Catastrophe

17. Energy: Some Basics.

18. Fossil Fuels and the Environment.

19. Alternative Energy and the Environment.

20. Nuclear Energy and the Environment.

21. Water Supply, Use, and Management.

22. Water Pollution and Treatment.

23. The Atmosphere, Climate, and Global Warming.

24. Air Pollution.

25. Indoor Air Pollution.

26. Ozone Depletion.

27. Minerals and the Environment.

28. Dollars and Environmental Sense: Economics of Environment Issues.

29. Urban Environments.

30. Waste Management.