This week, several major religious denominations joined the movement to legalize medical marijuana use; medical researchers sue the federal government for speedy access to marijuana for scientific study; the number of Canadian marijuana smokers has reportedly doubled over the past 13 years; marijuana possession charges are dropped against a principal who planted pot in a locker to get a student expelled; and the Canadian Supreme Court rules that police can't go on "fishing expeditions" looking for evidence of lawbreaking when they stop someone.