Medical marijuana users in Quebec can now help shed light on the drug's long-term safety and effectiveness through a new registry at McGill University in Montreal.
Now that 23 states have given medical marijuana the green light (with even recreational use now allowed in another four states and Washington D.C.), growing weed has become a growing business.
You've learned the visual difference between cannabis quantities and how to properly store your cannabis, but can you tell the visual difference between poor and high-quality cannabis?