The dawn of 21st century is clouded by unheard of perils to the performance of the natural world. In a globally interconnected economy, fast deforestation, falling water tables, erratic climate change and environmental pollution could harm economics around the world in the decade to come. About Author : Prof. Dr. P R Trivedi, Chairman, Indian Institute of Ecology and Environment, New Delhi. Contents : PrefacePeople and EnviornmentEnvironmental HealthHabitatLand ManagementForest ManagementAtmosphereHydrosphereDams Index