Robert Berkebile, 72, BNIM Architects, Kansas City, Mo., for his green building advocacy and promotion of sustainable design and planning. Mr. Berkebile helped found both the U.S. Green Building Council and the LEED rating system.

P. Dee Boersma, Ph.D., 62, University of Washington, Seattle, for developing greater understanding of the impact of humans on marine ecosystems. Dr. Boersma has conducted extensive field studies on penguins and other sea birds.

Christopher B. Field, Ph.D., 56, Carnegie Institution for Science and Stanford University, Stanford, Calif., for his leadership and innovation in carbon cycle and climate science. Dr. Field has played a critical role in the emergence of global ecology as a unique discipline and plays a major role in the Intergovernmental Panel on Climate Change.

Ashok Gadgil, Ph.D., 58, Lawrence Berkeley National Laboratory and the University of California, Berkeley, for his work as an inventor and humanitarian. He is known for creating simple inventions to solve fundamental problems in developing countries, such as inexpensive and reliable water-purification systems.

Chip Giller, 38, of Seattle, founder of Grist magazine, an online media platform devoted to environmental news and views, launched grist.org in 1999 to counter the notion of environmentalists as dour doomsayers and to spread a new, positive form of green journalism with a humorous twist.

Deborah Rice, Ph.D., 61, Maine Department of Health and Human Services, Environmental and Occupational Health, Augusta, for her research yielding new understanding about exposure to toxicants during human development. Dr. Ricke's research into neurotoxicology, the study of the interactions has demonstrated that early exposure to major environmental pollutants -- lead, methylmercury and PCBs -- can plant the seeds for later deficits in cognitive, sensory and motor function.

Joel Salatin, 52, Polyface Farm, Swoope, Va., for creating alternative, environmentally friendly farming techniques.

Kirk R. Smith, Ph.D., 62, University of California, Berkeley, for exposing the relationships among household air pollution, fuel use, climate and health.

Thomas Smith, 59, Public Citizen -- Texas, of Austin, an advocate of wind and solar energy efficiency. His work in crafting and passing the Texas Renewable Portfolio Standard is now being adopted in other parts of the country and has made Texas a leader in wind energy creation.

Beverly H. Wright, Ph.D., 61, Deep South Center for Environmental Justice, New Orleans, an environmental justice advocate and head of the environmental justice center at Dillard University. She has been tackling issues of environmental racism and is working to raise the profile of environmental issues in poor and minority communities nationwide.