With no help from the federal government, states are trying to regulate recreational marijuana. California's Department of ...

so cannabis regulators can keep track of it. Check out the rest of the series: How safe is your weed? Things have changed since the days before California legalized marijuana, Prichard says.

are about 2 weeks away from harvest. California's cannabis regulator inspects facilities like this regularly in an effort to keep contaminants out of the weed supply. (Preston Gannaway for NPR ...

so cannabis regulators can keep track of it. Check out the rest of the series: How safe is your weed? Things have changed since the days before California legalized marijuana, Prichard says.