Environmental regulation, cost-benefit analysis, and the discounting of human lives.

The loss of human life resulting from environmental contaminants generally does not occur contemporaneously with the exposure to those contaminants. Some environmental problems produce harms with a latency period whereas others affect future generations. One of the most vexing questions raised by the cost-benefit analysis of environmental regulation is whether discounting, to reflect the passage of time between the exposure and the harm, is appropriate in these two scenarios. The valuations of human life used in regulatory analyses are from threats of instantaneous death in workplace settings. Discounting, to reflect that in the case of latent harms the years lost occur later in a person's lifetime, is appropriate in these circumstances. Upward adjustments of the value of life need to be undertaken, however, to account for the dread and involuntary nature of environmental carcinogens as well as for higher income levels of the victims. By not performing these adjustments, the regulatory process may be undervaluing lives by as much as a factor of six. In contrast, in the case of harms to future generations, discounting is ethically unjustified. It is simply a means of privileging the interests of the current generation. Discounting raises analytically distinct issues in the cases of latent harms and harms to future generations. In the case of latent harms, one needs to make intra-personal, intertemporal comparisons of utility, whereas in the case of harms to future generations one needs to define a metric against which to compare the utilities of individuals living in different generations. Thus, the appropriateness of discounting should be resolved differently in the two contexts.

Automated determination of protein-nitrogen in cereals and grains.

This paper presents the design, performance, and operational characteristics of a new direct reading instrument for determining nitrogen in cereal and grain. Precision, accuracy, range, speed, ease of operation, sensitivity, sample size, and flexibility of the instrument are presented. Results on various cereals and grains are presented and compared with those obtained by the Kjeldahl technique. The apparatus is the result of research for a rapid method for determining nitrogen in organic material. The instrument uses a combination of a unique high temperature sample oxidation, a sampling valve for separating combustion products, and thermal conductivity detection for the liberated nitrogen in a helium carrier gas.