CConventional wisdom says that climate-change policies produce ancillary health benefits. Not so fast, say two researchers from the University of British Columbia (UBC) in Canada. In research published in this issue of EST (pp 387-392), the authors suggest that growth in diesel vehicle sales, spurred partly by a CO_2 tax on vehicles in the U.K., increases ambient levels of paniculate matter (PM) to such a degree that 90 more people could die annually from pollution-related illness.
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