This book, prepared in the context of the UN Conference on Sustainable Development (UNCSD), also known as Rio+20, contains the papers submitted to the World Symposium on Sustainable Development at Universities (WSSD-U-2012), which took place in Rio de Janeiro, Brazil on 5 and 6 June 2012. It pursues the following main aims: to document and disseminate experiences from universities all round the world regarding education for sustainable development; to foster the exchange of information, ideas and experiences acquired in the execution of projects; and to introduce methodological approaches and projects which aim to integrate the topic of sustainable development in the curriculum of universities. Last but not least, a further aim is to document and disseminate the wealth of experiences available today, providing a truly global coverage. "Sustainable Development at Universities: New Horizons" is a highly comprehensive publication on sustainability in higher education. It is meant to go beyond a description of the current state of knowledge, and shall open the way for new thinking and new horizons in what is a rapidly expanding field, of central interest to both industrialised and developing countries.