On leaded gasoline (TEL), there were strongly-correlations between state-by-state lock-step reduction in crime and reduced lead pollution, ie, introduction of c

On leaded gasoline (TEL), there were strongly-correlations between state-by-state lock-step reduction in crime and reduced lead pollution, ie, introduction of catalytic converters and outlawing TEL for most uses. [0] There might be a need to equip vehicle exhaust systems with nanoparticle traps to prevent pollution in the first place, if the risk to public health QALY is demonstrably significant. Also, it underscores the need to move to a mostly EV society. 0: http://www.motherjones.com/environment/2016/02/lead-exposure-gasoline-crime-increase-children-health/ http://www.motherjones.com/environment/2016/02/lead-exposure...