While there have always been norms and customs around the use of drugs, explicit public policies--regulations, taxes, and prohibitions--designed to control drug abuse are a more recent phenomenon. Those policies sometimes have terrible side-effects: most prominently the development of criminal ent[...]

Should marijuana be legalized? The latest Gallup poll reports that exactly half of Americans say "yes"; opinion couldn't be more evenly divided. Marijuana is forbidden by international treaties and by national and local laws across the globe. But those laws are under challenge in several countries[...]