Written by youth for youth, TUNZA: Acting for a Better World is based on the United Nations Environment Programme's flagship environmental assessment, Global Environment Outlook: Environment for the Future We Want (GEO 5). It examines a variety of trends related to the Earth's 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 Earth's atmosphere, land, water and biological diversity. It shows how youth are taking action - today - to build a better tomorrow.