Drip irrigation is a technology with great potential for improving the efficiency of water use, and for increasing crop production and food security by enabling agriculture on marginal land. Yet drip irrigation’s uptake is patchy, with conspicuous successes in some locations and failures in...

The derived nature of transportation demand implies that enhancement of mobility per se is not a reasonable goal for transportation policy; instead, improved mobility is desired to the extent that it furthers accessibility--a goal that can be achieved through a variety of measures. The paper...