Each of the 2006 Principal Voices is appearing in short film to explain their views on their area of expertise. The films are shot where the Principal Voices live and work, giving a fascinating insight into their lives.

Links allowing you to watch the films will be placed on the page as each film is completed.

Ricky Burdett, Professor of Architecture and Urbanism at the London School of Economics explains the crucial role played by transport infrastructure in shaping Britain's capital city.
Watch video | Read Burdett's white paper
Bill Reinert, manager for advanced technologies, Toyota U.S., explains how new fuel systems will transform the cars we drive.
Watch video | See Reinert taking part in the Delhi debate on urbanization | Read Reinert's white paper
Geetam Tiwari, Professor of Transport Planning at the Indian Institute of Technology, argues that all methods of transport methods from buses to bicycles need to be considered when planning how a city moves.
Watch video | See Tiwari taking part in the Delhi debate on urbanization | Read Tiwari's white paper
Wangari Maathai, a long-standing Kenyan campaigner on the environment, sustainable development and human rights, won the 2004 Nobel Peace Prize for her work. In 1977, she founded the Green Belt Movement, which uses the notion of planting trees as the basis for work on the environment and other areas. Formerly a professor of anatomy, Maathai has also campaigned on debt reduction, women's rights and democracy.
Watch video | Read white paper
Amory Lovins, alternative energy expert, co-founded the Rocky Mountain Institute in 1982. It has since grown to become one of the world's leading research and education organizations on energy and resource use. Trained as an experimental physicist, Lovins has written or co-written 29 books and briefed 18 heads of state. Watch video
David Hales is president of the College of the Atlantic, a US college with an ecologically-centered approach. Previously, he was head of sustainability research at the Worldwatch Institute think tank, and in charge of environmental and resource policy at the United States Agency for International Development (USAID), He also served under President Jimmy Carter. Watch video | Read white paper
Muhammad Yunus, winner of the 2006 Nobel Peace Prize for his work as founder of the Grameen Bank, explains how it lends small sums to poor people in Bangladesh.
Watch video
Rodrigo Baggio, founder of the Committee for Democracy in Information Technology explains how his Rio-based group helps poor young people learn vital computer skills.
Watch video | Read Baggio's white paper
Jeffrey D. Sachs, head of Columbia University's Earth Insititute and leading development expert, explains how the UN Millennium Development goals can help the globe's poorest people to help themselves.
Watch video | Read Sach's White Paper
Victoria Hale, founder of the Institute for OneWorld Health, explains how her non-profit organization is working to eradicate diseases in India.
Watch video | See Hale take part in London debate on Collaborative Corporation | Read Hale's white paper
Malini Mehra, says how her Center for Social Markets promotes social responsibility and sustainable business, especially in developing countries.
Watch video | See Mehra take part in London debate on Collaborative Corporation
Peter Bakker, chief executive of logistics multinational TNT, talks about the company's close work in assisting the UN World Food Program.
Watch video