Michael Pollan is a professor of journalism at the University of California, Berkeley, where he is also director of the Knight Program in Science and Environmental Journalism. Pollan is a contributing writer for the New York Times Magazine, a former executive editor for Harper's Magazine, and author of five books: In Defense of Food: An Eater's Manifesto (2008) The Omnivore's Dilemma: A Natural History of Four Meals (2006), The Botany of Desire: A Plant's-Eye View of the World (2001), A Place of My Own (1997), and Second Nature: A Gardener's Education (1991)

LESTER BROWN has been described by the Washington Post as "one of the world's most influential thinkers." After working with the Department of Agriculture in international agricultural development, Brown helped establish the Overseas Development Council, then founded the Worldwatch Institute, which has played an important role in the public's understanding of trends in our global environment with its annual State of the World report and later the annual Vital Signs In 2001, he left Worldwatch, founded Earth Policy Institute www.earth-policy.org, and published Eco-Economy: Building an Economy for the Earth. His other books include Who Will Feed China?; Tough Choices: Facing the Challenge of Food Scarcity, and his newest book PLAN B 3.0: MOBILIZING TO SAVE CIVILIZATION. PLAN B 3.0 is a comprehensive plan for reversing the trends that are undermining our future. Its four overriding goals are to stabilize climate, stabilize population, eradicate poverty, and restore the earth's damaged ecosystems. Failure to reach any one of these goals will likely mean failure to reach the others as well.

Steven Clemons is is the publisher of the popular political blog; www.thewashingtonnote.com, and a former staff member of Senator Jeff Bingaman. Clemons is also Director of the American Strategy Program at the New America Foundation, and the former director of the Japan Policy Research Institute. He characterizes himself as a "progressive realist."

Thomas Hayden is an American social and political activist and politician, most famous for his involvement in the anti-war and civil rights movements of the 1960s. Hayden serves as a member of the advisory board for the Progressive Democrats of America, an influential "grass roots" organization created to expand “progressive” political cooperation within the Democratic Party. Enjoy the conversation as Terrence and Tom talk about the 2008 election, Barack Obama and Super Tuesday!

MUHAMMAD YUNUS, Nobel Peace Prizewinner, pioneer of micro-credit author, BANKER TO THE POOR, and his newest, CREATING A WORLD WITHOUT POVERTY As founder of Grameen Bank, YUNUS pioneered microcredit, the innovative banking program that provides poor people--mainly women--with small loans they use to launch businesses and lift their families out of poverty. In the past thirty years, microcredit has spread to every continent and benefited over 100 million families. But YUNUS remained unsatisfied. Much more could be done, he believed, if the dynamics of capitalism could be applied to humanity's greatest challenges. Now, in CREATING A WORLD WITHOUT POVERTY, Yunus goes beyond microcredit to pioneer the idea of social business--a completely new way to use the creative vibrancy of business to tackle social problems from poverty and pollution to inadequate health care and lack of education.