Life-Cycle Assessment in Relation to Risk Assessment: An Evolving Perspective

A life-cycle approach takes a cradle-to-grave perspective of a product's numerous activities from the raw material extraction to final disposal. There have been recent efforts to develop life-cycle assessment (LCA) to assess both environmental and human health issues. The question then arises: what are the capabilities of LCA, especially in relation to risk assessment? To address this question, this paper first describes the LCA mass-based accounting system and then analyzes the use of this approach for environmental and human health assessment. The key LCA limitations in this respect are loss of spatial, temporal, dose-response, and threshold information. These limitations affect LCA's capability to assess several environmental issues, and human health in particular. This leads to the conclusion that LCA impact assessment does not predict or measure actual effects, quantitate risks, or address safety. Instead, LCA uses mass loadings with simplifying assumptions and subjective judgments to add independent effects and exposures into an overall score. As a result, LCA identifies possible human health issues on a systemwide basis from a worst case, hypothetical hazard perspective. Ideally, the identified issues would then be addressed by more detailed assessment methods, such as risk assessment.     

Expressions of love, sex, and hurt in popular songs: a content analysis of all-time greatest hits

This research analyzed the 100 most popular songs (1958–1998) for artist characteristics and expression of love. In the 1990s women and black artists recorded more hits than in earlier periods. Over time, references to love in lyrics performed by women artists decreased. References to sex in lyrics peaked during 1976–1984 when women used sexual references five times more than men; however, during 1991–1998, men used more sexual references. Later songs and songs performed by white, female artists expressed greater selfishness. The quality of love expressed in lyrics remained the same. Results are discussed relative to cultural change.