The cannabis plant is used to make hemp. The stem is the part of the cannabis plant that makes hemp, while the leaves are most commonly used for marijuana. Hemp will not get you "high." Hemp can be used in many different industries. These include paper, clothing, fuel, paper, food products, and hemp nutritional supplement manufacturing.
Hemp can be grown in open areas without the use of pesticides and herbicides. Cotton however needs a lot more agricultural chemicals to thrive. It uses half the pesticides used in the world. Hemp's deep rooting system removes toxins from the soil and aerates it, which is a benefit for future crops.
Hemp fibers, unlike cotton, are stronger, longer, more absorbent, and more insulative than cotton. This effectively means that hemp fibers will keep you cooler in summer than cotton and warmer in winter. Hemp clothing is more resistant to fading than cotton and can be made into many fabrics including linen. Hemp fabrics are strong, soft, and can block ultraviolet light well.
Hemp is often used as a substitute for fiberglass in the automotive industry. Hemp is biodegradable, and it's also cheaper than other options. This is a positive step towards being more environmentally conscious. Hemp has the potential to be a biodegradable material, which would be an improvement on existing technology.