Vice Pres. Al Gore announced 47 modest federal initiatives aimed at promoting sustainability and smart growth yesterday. In a keynote address in Detroit at the National Town Hall Meeting on Sustainable America — which is being attended by 3,000 community, environmental, and business leaders — Gore called for the development of abandoned industrial sites and a shift in spending away from highway construction and toward mass transit. Gore believes his emphasis on livability and growth management will resonate with swing voters in suburbs.