Alejandro CALVILLO was founder and executive director of Greenpeace Mexico from 1992 to 2001, where he previously served as campaign coordinator and as atmosphere and energy campaign coordinator. He is working now as independent consultant. He adviced the Worls Wild Livefund Gulf of California program in their campiagn to protect an marine mammal(vaquita marina) that is in risk. He has written about nuclear energy, air pollution, impact of the NAFTA agreement, the case of the transgenic maize imported from Unisted States on many articles for newspapers and magazines. In addition, he writted radio scripts and produced more than 200 hours of environmental radio programs. He has taken action in campaigns against the nuclear plant of Laguna Verde and on other social issues, like the case of the ecologist farmers tortured by the mexican army. He has a degree in sociology from Metropolitan Autonomus University and studied philosophy as a doctoral student at the University of Barcelona.