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To date, 16 states have passed medical marijuana laws, yet very little is known about their effects. Using state-level data, we examine the relationship between medical marijuana laws and a variety of...
We exploit the introduction of electronic toll collection, (E-ZPass), which greatly reduced both traffic congestion and vehicle emissions near highway toll plazas. We show that the introduction of E-Z...
In this study we analyze the evolution of the drugs consumption and the rapport between drugs and criminality. After the definition of drugs, the study presents a general image of the illegal drugs co...

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