Hydro resources are provided by nature. The exploitation of such resources can generate significant economic rent to the owners. In the past, governments have usually claimed ownership of hydroelectric resources and passed on the rents to their state-owned utilities, which have used them to...

Air pollution has become a serious issue in many Asian cities. A major cause is the expanding motor vehicle population--with growth rates as high as 23 percent in rapidly growing economies such as China. Experience worldwide has shown that the use of clean fuels (low-lead or unleaded gasoline...

In response to emerging epidemiological evidence of the toxicity of diesel vehicular emissions, there is growing interest in substituting conventional diese with much cleaner natural gas in cities where ambient concentrations of particulate matter are markedly higher than what is internationally...