Det farliga blyet

Förr i tiden innehöll bensin icke oansenliga mängder bly. I studien ”Understanding How Low Levels of Early Lead Exposure Affect Children’s Life-Trajectories” undersöks vilka effekterna blev av blyets utfasning:

Following 800,000 children differentially exposed to the phaseout of leaded gasoline in Sweden, we find that even a low exposure affects long-run outcomes, that boys are more affected, and that changes in non-cognitive skills explain a sizeable share of the impact on crime and human capital.

En utfasning med mycket goda effekter i termer av minskad brottslighet och mer, samt mer lyckad, utbildning, som det verkar.