Copyright protects original creative works that are fixed in a tangible form. Copyright applies to literary works, music, art, movies, and other creative works. Copyright lasts for the life of the creator plus 70 years. Some uses of copyrighted works without permission, like commentary and teaching, are allowed under fair use guidelines. Plagiarism involves copying someone else's work and passing it off as your own without credit. Plagiarism can result in academic and legal penalties. To avoid plagiarism, sources must be properly cited.