This book examines the development of environmental law in the period since the ground-breaking 1992 United Nations Conference on Environment and Development or 'Earth Summit' in Rio de Janeiro. It demonstrates that a great deal has been achieved in the field of environmental law since the 1990s. However, the extraordinary environmental crises facing humanity in the 21st century indicate a continuing urgent need for the generation of robust policies and frameworks concerning ecological, socio-cultural and economic sustainability, implemented through appropriately innovative legal mechanisms....