Marijuana

Esther Honig / Harvest Public Media

For every crop in the United States, the Environmental Protection Agency carries out a rigorous set of tests to determine which pesticides are safest. How and when a pesticide is used can depend on how that crop is consumed by the average person — is it ingested, inhaled or applied topically?

It’s a precise science that aims to keep consumers safe from potentially toxic residues. But, like most federal regulations, none of it applies to the marijuana industry.      

Public Domain

After nearly a century of prohibition, Canada became the first major economy this week to legalize recreational marijuana (though Uruguay was the first in 2013), and it has U.S. companies lining up.