Airports serve an essential role in domestic and international travel, facilitating the origination, termination, and connections of air flights. Airport services enhance regional, national, and global connections, increasing the mobility of people worldwide and enhancing local and regional...

An efficient air transport system is critical to countries attaining and sustaining healthy economies in an increasingly interconnected world economy. Competing successfully now means quick shipping over long distances at reasonable rates. Societies also prosper when people from different...

The economic efficiency of wetland mitigation in Minnesota's Red River Valley was examined using the Minnesota Routine Assessment Method on ten wetland case studies to rate the functions of impacted and replacement wetlands. Secondary sources were used to assign dollar values to wetland...

Leafy spurge (Euphorbia esula L.), a widely established exotic, noxious, perennial weed, is a major threat to the viability of commercial grazing and beneficial outputs of wildlands in the Upper Great Plains. Herbicide treatments are often recommended based upon measures of physical control...

The economic impact of three invasive, exotic weeds--diffuse, spotted, and Russian knapweed (Centaurea diffusa, C. maculosa, and Acroptilon repens)--on Montana's economy was estimated using a procedure developed for another invasive weed species. Published data and that from a survey of county...