Elizabeth May has been an environmental leader all her life, actively involving herself in more than 15 environmental organizations, writing eight books, and continuing to introduce and support environmental legislation as an MP. A few highlights of her environmental record include working at the Public Interest Advocacy Centre, where she challenged the use of the herbicide Alachlor, serving as Senior Policy Advisor to the federal Environment Minister, establishing federal-provincial treaties and then US-Canada agreements on acid rain, and becoming the first national staff for Sierra Club of Canada.

Since being elected in 2011, May has presented hundreds of amendments to environmental bills moving through the House of Commons. She has continued to push the needle forward on the environment, succeeding in moving Canada to embrace the 1.5 degree target at COP21, pressing other countries to ratify the Kigali amendments to the Montreal Protocol, working as an intervenor in the National Energy Board Kinder Morgan review and pressing Canada to sign on to the Ocean Charter on plastics at the UN in spring 2017.