Marijuana Marijuana is a preparation of dried, shredded leaves from the Indian hemp plant Cannabis sativa, which means "useful hemp". Preparations made from Cannabis include marijuana, the dried plant material; hashish, the dried resin from the flowers and associated leaves; and hash ...

Legalization of Marijuana Marijuana has been effectively prohibited in the U.S. since 1968, and has been a very controversial issue ever since. Marijuana is native to central Asia and was first cultivated some 10,000 years ago. "As early as 2737 B.C.E. in China, written accounts have extoll...