ELIZABETH MAY, Leader of the Green Party in Canada, and for years the only Green in Parliament, May is among the hardest working environmentalists in the world. She fought successfully against aerial insecticide spraying on forests on Cape Breton Island and also against nuclear power. She became Senior Policy Advisor to a federal Environment Minister, creating national parks and negotiating the Montreal Protocol, which has since helped heal our ozone hole problem. She served as Executive Director of the Sierra Club of Canada from 1989-2006 and also on the International Institute for Sustainable Development, as Vice-Chair of the National Round Table on Environment and Economy, on the Earth Charter Commission co-chaired by Maurice Strong and Mikhail Gorbachev, and was a Commissioner of the Earth Charter International Council.