The seed of Cannabis sativa L. has been an important source of food for thousands of years in Old World cultures.

Bio-ethanol produced under the proper conditions, is essentially a clean fuel and has several clear advantages over petroleum-derived gasoline in reducing greenhouse gas emissions and improving air quality in metropolitan areas.

Hemp (Cannabis sativa L.) fibre can be used for biocomposites, textile, and many other applications.

The study of marijuana cannabinoid biology has led to many important discoveries in neuroscience and immunology. These studies have uncovered a new physiological system, the endocannabinoid system, which operates in the regulation of not only brain function but also the regulation of the immune system.