A passive solar lighting system that mimics conventional electrical lighting systems has been developed. The system consists of a filon light collector with a boxlike system of diffusers. It has been applied to an office area in Trinidad and Tobago and its effectiveness evaluated. Results...

Of the dozen or so issues on the agenda when the Group of Seven held its annual meeting in Cologne in June, 1999, few captured the attention of the world as much as debt relief for the poorest and most indebted nations. In the past half-decade, wide-ranging and active support has developed for...

Amartya Sen's multidimensional capability approach focuses on the importance of freedoms to be or do things people have reason to value. It is an alternative to standard utilitarian welfarism, the theoretical approach to quality-adjusted life years (QALYs) and cost-utility analyses. Despite the...

Perinatal interventions delivered during the prenatal period have the potential to directly impact prenatal life. The decision on when to begin 'counting' the life of an infant in the calculus has received little attention in previous economic evaluations of perinatal interventions. We...