A podcast is a digital audio or video file that is made available on the internet for download and streaming. Podcasts can be created by anyone and are often produced as a series, with new episodes being released on a regular schedule. They can be listened to on a computer or mobile device, and can also be subscribed to so that new episodes are automatically downloaded as they become available. Podcasts cover a wide range of topics, including news, politics, entertainment, education, and more. They can be in audio or video format and can be produced by individuals or by organizations. They can be listened to live or on-demand.