Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power. In their most general form these activities include the production of works of art, the criticism of art, the study of the history of art, and the aesthetic dissemination of art.
Africa is the world's second most-populous continent after Asia and has a huge need for energy and feedstock supply. African food and agricultural waste provides an excellent substrate for biorefinery processes for the production of valuable, sustainable products, including biofuel.