Callum Roberts is Professor of Marine Conservation at the University of England. He is a prolific author and researcher, and has advised the US, British, and Caribbean governments on the creation of marine reserves. He is the author of The Unnatural History of the Sea. >>Blog

Courtney White is co-founder and Executive Director of The Quivira Coalition, a nonprofit organization dedicated to building bridges between ranchers, conservationists, public land managers, scientists, and others. A former archaeologist and Sierra Club activist, White now devotes himself to land restoration. He is the author of Revolution on the Range: The Rise of a New Ranch in the American West. >>Blog

Christopher Leinberger is a land use strategist, developer, teacher, consultant and author, helping to make progressive development profitable. He is currently a Visiting Fellow at the Brookings Institution in Washington, D.C. He is the author of The Option of Urbanism: Investing in a New American Dream. >>Blog

Rep. Jay Inslee, who was first elected as a member of Congress from Washington State in 1992, serves on the Energy Subcommittee of the House Energy and Commerce Committee and on the Select Committee on Energy Independence and Global Warming. He is the author of Apollo’s Fire: Igniting America’s Clean Energy Economy. >>Blog

Rocky Barker is the environmental writer for the Idaho Statesman in Boise and has seen his column syndicated in newspapers across the nation. The National Wildlife Federation awarded him its National Conservation Achievement Award in 1999. He is the author of Scorched Earth: How the Fires of Yellowstone Changed America. >>Blog

Steve Pyne is a professor in the School of Life Sciences at Arizona State University. He is the author of many acclaimed books, including Year of the Fires (Viking, 2001), The Cycle of Fire series (University of Washington Press), How the Canyon Became Grand (Penguin, 1999), and Tending Fire: Coping with America’s Wildland Fires (Island Press, 2004). >>Blog

Terry Tamminen, author of Lives Per Gallon: The True Cost of Our Oil Addiction, is with the New America Foundation and Pegasus Capital Advisors. He is a prolific author and policy consultant, and advises the Governor of California, Canadian Premiers, and other state leaders on climate and energy policy. >>Blog

Kevin Doyle, founder of the Environmental Careers Organization and author of The ECO Guide to Careers that Make a Difference is an expert in the environmental jobs field. Doyle is also the president of Green Economy, a Boston-based training, consulting, and research firm with services for the institutions and individuals building a more sustainable world. >>Blog

Robert Engelman is author of More: Population, Nature, and What Women Want and Vice President for Programs of the Worldwatch Institute. He is a veteran expert of the population and reproductive health fields. >>Blog

Elizabeth Grossman is the author High Tech Trash: Digital Devices, Hidden Toxics, and Human Health. A resident of Portland, Oregon, her writing has appeared in The Nation, Orion, The Seattle Times, The Washington Post and other publications. >>Blog