Solar disinfection, or SODIS, shows tremendous promise for point-of-use drinking water treatment in developing countries, but can require 48 h or more for adequate disinfection in cloudy weather. In this research, we show that a number of low-cost additives are capable of accelerating SODIS. These additives included 100-1000 muM hydrogen peroxide, both at room temperature and at elevated temper...

Bad things happen. Although human society has been remarkably successful in developing techniques to preempt some bad events, the successes have raised expectations. As we have devised ways of reducing some risks, smaller risks seem more significant. Simultaneously, technological solutions to some problems have created new risks of their own. The environmental risks that have resulted, both fro...

John Hall was a successful physician in Stratford-upon-Avon in the early 17th century with an extensive rural practice and was the son-in-law of William Shakespeare (to whom, some fancifully allege, he imparted his medical knowledge). He kept a casebook (written in Latin but later translated into English) of many of his cases (only his apparently successful ones!) which included several patient...

John Hall was a successful physician in Stratford-upon-Avon in the early 17th century with an extensive rural practice and was the son-in-law of William Shakespeare (to whom, some fancifully allege, he imparted his medical knowledge). He kept a casebook (written in Latin but later translated into English) of many of his cases (only his apparently successful ones!) which included several patient...