Usama Ihsan

We all know our planet is limited. It means the resources it carries are limited. From the time humans came into being, they are continuously extracting minerals and other natural resources from the land to meet their needs. Human is still searching new and better reserves of resources to meet its ever growing needs and demand. Sustainable development guide human to live their lives in such a way that the carrying capacity of this planet must be taken care of. Good health, long-term wealth and living standards improvements should be accomplished for every human without disturbing the biodiversity. Three key elements of sustainable development: economy or profit, environment or planet, social or people. All of them are interlinked and there should not be any development that make them apart from each other. Definitions of Sustainable Development: "Improving the quality of human life while living within the carrying capacity of supporting ecosystems" (IUCN, UNEP, WWF)

Sustainable development is a wide spread concept. This is because it deals with almost each and every aspect of life. Different public and private organizations, socialists and environmentalists presented their views about the Sustainable development and defined this concept in different ways. Sustainable development is an integrated approach that includes economy, environment and society. All of these three elements should be kept in balance but it is difficult to manage them in equality. " Three Sectors: Economy, Environment, and Society " is the first and most basic view. This model divides sustainable development into economy, environment and society. These are three interconnected rings and where these intersect each other; sustainable development takes place. It is the most simple model and mutually exclusive as well. It means that there is a trade-off between these three elements. Economic growth can destroy environment or society and vice versa. Also there is