In Aotearoa New Zealand we need an informed educational response to the environmental crisis within and across all learning areas in the curriculum. One way of organising that response is through the concept of eco-literacy. This article explains the concept of eco-literacy developed within the TLRI project Tuhia ki Te Ao--Write to the Natural World, and introduces the collection of four articles from the project published in this issue of "set." This introductory article outlines how the model of eco-literacy has been enacted within the learning areas of English, the Arts, and Social Sciences, and indicates how eco-literacy is connected to Maori and Pasifika cultural perspectives within the full articles. [This article was written with John Morgan, Molly Mullen, Rawiri Hindle, and Michelle Johansson.]