United Streaming has since become Discovery Education streaming and remains a subscription-based service. You might also try video-sharing services such as YouTube.com, TeacherTube.com, SchoolTube.com, Vimeo.com, and others. Free history and social studies video clips are also available at PBS Video, BBC Motion Gallery, History Channel Video Gallery, Library of Congress: American Memory, New York Times (on YouTube), National Geographic Videos, Brain Pop, Hartcourt Schools, Geography at the Movies, D4K.org, Educational Mini Movies, MrDonn.org, and other sources.