Passive smoking increases children's risk of nasal cancer
Passive smoking in childhood may increase the risk of nasal cancer, says a study of children whose parents had lung cancer. The incidence of bladder and kidney cancer was also greater in the offspring, possibly as a result of exposure to tobacco carcinogens either in the womb or through breast feeding, say researchers writing online in the International Journal of Cancer on 10 August (http://www3.interscience.wiley.com/, doi: 10.1002/ijc.21387). ::: ::: Although the carcinogenic effects of active smoking have been seen at many sites, the effects of passive smoking and exposure in pregnancy and breastfeeding are less well documented, say the researchers. ::: ::: The authors used …
The results from the regional air quality analysis for the Four Corners Study are discussed in the paper. The study was one of five regional studies conducted for the National Commission on Air Quality. Potential regional air quality impacts were evaluated through the year 1995 for alternative energy scenarios under current and alternative regulatory policies. The alternative regulatory policies include emission fees, technology standards, emission ceilings, and prevention of significant deterioration class elimination. The alternatives were compared in terms of their impacts on regional visibility and on the ambient concentrations of SO/sub 2/, SO/sub 4/, and primary fine particulates. The fate of the pollutants was estimated. The alternative regulatory policies were quite different with respect to their control of SO/sub x/ emissions and their impacts on regional visibility. Sources located outside of the study region were estimated to have a major impact on regional air quality within the study region.