Written by youth for youth, TUNZA: Acting for a Better World is based on the United Nations Environment Programmes flagship environmental assessment, Global Environment Outlook: Environment for the Future We Want (GEO 5). It examines a variety of trends related to the Earths system, and explores whether internationally agreed environmental goals such as those on climate change, biodiversity loss and dangerous chemicals are being achieved. Despite numerous global, regional and national commitments, there has been little significant progress in reversing environmental decline in almost all areas of scrutiny. Yet, there is a note of hope. TUNZA: Acting for a Better World highlights the efforts of young people to protect the Earths atmosphere, land, water and biological diversity. It shows how youth are taking action today to build a better tomorrow.