Natural fibers are a renewable resource, par excellence, having been renewed by nature and by humans for millennia. Recently, they have drawn tremendous attention from both the scientific community and industrial sectors due to their abundance and low cost, good specific mechanical properties, and environmental benefits. The tremendous growth in the use of non-renewable and non-biodegradable synthetic materials and associated emission of greenhouse gases is presently a big concern for the environment and future generations. In this context, the use of natural fibers, extracted from plants that absorb carbon dioxide and benefit the environment, seems to be highly attractive. In addition, the processing of natural fibers generates wastes, which are mostly organic and can be used to generate electricity or green building, and at the end of their life cycle, they are 100% biodegradable.