GEORGE BERNARD / SCIENCE PHOTO LIBRARY GEORGE BERNARD / SCIENCE PHOTO LIBRARY
Cannabis. Indian woman smoking a pipe while breast-feeding her baby. The cannabis plant (Cannabis sativa) is native to north India, where narcotic varieties are known as "bhang". The drug is produced by resin glands on the surface of the plant as a defence against predators, and is most concentrated in the flowering tips of unfertilized female plants. These are either smoked, cooked in cakes or boiled in milk to produce an infusion. Some farmers separate the resin from the flowers by rubbing between the hands, producing a form of the drug called "hashish" in Arabic. This picture shows male flowers, which are much less potent.
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