One of the first principles of sustainable design and urban and regional land use and transportation planning is to recognize that we are all connected, and what one of us does affects us all. As such, sustainable design and urban planning is about creating sustainable "communities." This means that we need to be concerned not only with the direct and obvious negative environmental impacts that can be traced to our individual actions, but that we also need to address the collective and cumulative impacts of our societal activities. That is where urban and regional design and planning comes in. Urban and regional design and planning is how we as a community or society can work cooperatively to build sustainable communities. Urban and regional design and planning consists of three components: (1) research to identify problems; (2) brain-storming through design charettes and other means to develop alternatives; and (3) public participation to reach consensus on proposed means of implementation. Urban and regional design and planning, however, does not replace the political process in making the ultimate decision on implementation actions such as revised zoning, public infrastructure funding, etc. What urban and regional design and planning does is to help promote informed decision-making and a long-range vision to guide development. In this context, what sustainable design and urban planning does is to include sustainability is a criterion to help guide development decisions.