In this paper I discuss general conceptual issues in the estimation of the impacts of CO2 emissions from soils and biomass, over time, as a result of land-use change (LUC) due to increased demand for energy crops. The effect of LUC on climate depends generally on the magnitude and timing of...

Most cars carry one person and are used for less than 1 hour per day. A more economically rational approach would be to use vehicles more intensively. Carsharing, in which a group of people pays a subscirption plus a per-use fee, is one means of doing so. Carshanng may be orgarazed through...

Most automobiles carry one person and are used for less than one hour per day. A more economically rational approach would be to use vehlcles more intenslvely. Carsharing, in which people pay a subscnption plus a per-use fee, Is one means of doing so. Carsharing may be organlzed through affinity...

Land development and vehicle travel continue to outpace population growth. Efforts to manage this growth and the adverse impacts associated wlth it have been mostly ineffective. Promising technology solutmns include tetecommunicat!ons (telecommuting, electromc commerce, teleconferencing, etc.),...