The document discusses the rise of podcasting and its use in education. It describes how podcasting became popular due to the growth of portable MP3 players and RSS feeds, which made it easy for individuals to create and share audio content. The document also outlines how teachers can use podcasts to summarize lessons for students, share resources, and have students create their own podcasts to develop research and communication skills. However, it notes schools must ensure any student-created podcasts do not infringe on copyright or contain offensive/libelous content.