Regulators had to work with limited existing information on the possible risks of pesticides and contaminants in marijuana.

Colorado regulators fined more than 40 cannabis cultivators and manufacturers over the last five years for failing to comply ...

Marijuana’s humid growing conditions are a paradise for dangerous mold. States where marijuana is legal make growers hire laboratories to check for concentrations of mold and other contaminants ...

OKLAHOMA CITY ( KFOR) — An Oklahoma lab says many of the products that it tested show high amounts of mold, yeast, even salmonella in pre-rolls, and this is not the first time. Havard Industries Lab ...