Ridding world of leaded petrol could have $2.4 trillion yearly health, social & economic benefits @UNEPandYou says
"When the first draft report came out we all felt that these numbers were too high - how can removing lead from petrol result in benefits equal to four per cent of the GDP. It was too good to be true. However, we found independent corroboration of our approach in the literature, and we have had our work peer-reviewed by some of the leading experts in the field. When viewed over the decades of progress in phasing out leaded fuel, it is more appropriate to speak of the global benefits in trillions of dollars, not billions, but trillions," stressed Professor Thomas Hatfield, Chair of the Department of Environmental and Occupational Health at the California State University, Northridge, who co-wrote with researcher Peter L. Tsai the study, the Global Benefits of Phasing Out Leaded Fuel.