Opium remains the leading drug of choice, followed by marijuana and its derivatives. Iran's meth use has reportedly gone down.
Can more balanced representations of drug users spark discussions on how to solve North America’s heroin epidemic?
South Africa is battling a new street drug called nyaope, which combines several substances so users can get a cheap high. But efforts to tackle the problem in the country's townships don't appear to be succeeding.
Heroin has been a major problem in Vancouver for decades. To battle it, the city has launched a new program that provides serious addicts pure heroin three times a day. Is that actually a good idea?