Book excerpt: Key Selling Points This book discusses the environment through an organic conversation starting with a common observation and continuing with follow-up questions that would naturally come from a young child. Sidebars define larger concepts for further discussion with older or more curious children. Contains a foreword by Bob McDonald of CBC’s Quirks & Quarks . Subjects discussed or defined include littering, pollution, natural resources, human impact, sustainability, innovation and renewable resources. On Our Nature Walk includes profiles of young innovators who are making a difference for the planet, including Ann Makosinski, Deepika Kurup, Param Jaggi and Greta Thunberg.