risk management
James Hammitt has spent three years doing risk analyses of buses that run on diesel fuel versus buses that run on natural gas. (Jon Chase) |
New busing controversy flares upJames Hammitt, professor at the School of Public Health, and his colleagues have spent the past three years doing risk analyses of buses with conventional diesel engines and emission-controlled diesel engines versus buses that run on natural gas. To compare, the researchers used a conventional measurement known as the quality-adjusted life-year (QALY). It says essentially that if someone dies, we count the loss in terms of how many years he or she would have lived otherwise. The bottom line? |
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