Cannabis seed oil can be used as a base for paints, varnishes, lacquers etc. There are no dangerous bye-products. Cannabis seed itself is one of the most complete and wholesome vegetable foods on the planet. Because it can be grown so easily almost anywhere, it could be used to feed many of the world's starving millions. The free and easy availability of home grown cannabis for use as a recreational relaxant and beneficial preventative and curative medicine would bring about decreased production of dangerous pharmaceutical drugs the production of which is environmentally damaging.
Cannabis cultivation is environmentally friendly.
Cannabis can be used to make biodegradable plastics. Cannabis can be used to prevent and reverse desertification , simply by seeding the areas.