Standard elicitation approaches used to obtain quantitative information typically assumes that individuals can provide a precise value. For unfamiliar (as as well as familiar) goods, this is a strong assumption. We suggest they use of self-selected intervals, in which the shortest possible...

The pervasiveness of particulate matter in arid cities has yet to be discussed and tackled. Given that urban trees have been documented to provide air-filtering and dry deposition services, this study documents the stated benefits from an urban afforestation scenario in Mexicali –an arid city...