This statement addresses the ongoing commitment of Australian psychologists to achieve a more adequate and useful understanding of the reciprocal impacts of people and the natural environment, and strongly advocates for a more substantive involvement by psychologists in addressing current and envisioned threats to the sustainability of the natural environment and its ecosystems, in Australia, and globally. Environmental degradation is in large part caused by human behaviours and directly affects human health and well being. Because of this psychologists have an integral and indispensable role to play in analysing and addressing linkages between people and environmental problems and finding achievable and effective solutions.