September 11, 2001, led to renewed emphasis on airport security in the United States. Before the tragedy, government policy led to a suboptimal level of security. The fundamental problem was not simply the use of private security firms, but rather the reliance on airline financing and poor...

A key problem of water is the provision of a safe water supply for domestic use. Given the characteristics of water as a commodity, the general misuse of the pricing mechanism, and the economics of developing and operating water and wastewater systems, governments are faced with the challenge of...