Leaves make up an essential component of the earth’s environment. They provide a vital food source and shelter for many species; they filter the air we breathe by absorbing particulates and pollutants; and they help maintain the atmosphere’s oxygen levels. However, as we continue to exploit the earth’s resources and harm the environment, much more than leaves will be affected.

McGill University is committed to working towards a more sustainable campus. It is hoped that this publication will engage all members of the McGill community to thinking more about sustainability.