Have you ever seen a butterfly in the snow? Probably not. Butterflies can’t survive cold weather, so when winter comes, many butterflies fly to warmer places. They migrate. Woodchucks don’t like cold weather either, but they don’t migrate; they hibernate. Woodchucks sleep in their dens all winter long. Read and find out how other animals cope with winter’s worst weather. U.S. Code › Title 17 › Chapter 1 › § 107 17 U.S. Code § 107 - Limitations on exclusive rights: Fair use US Code Notes Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright. In determining whether the use made of a work in any particular case is a fair use the factors to be considered shall include—