Arizona dispensaries are required to test cannabis products for potency and contaminants. Testing regulations, implemented in 2020, cover potency and contamination from microbials, heavy metals and ...

Anna Schwabe was studying cannabis genetics for her PhD at Northern Colorado University, investigating whether people could smell genetic differences between cannabis strains. After getting back ...

Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. Getting too stoned always has been—and ...

California’s cannabis has long been known for being notoriously strong, but test results from the state’s legal stores show that weed in the Golden State is getting weaker. Experts say there’s more to ...