A podcast is a series of audio episodes that you can listen to whenever you want, usually by downloading them to a phone or computer. Think of it like a radio show, except you're not stuck listening at a specific time. You can subscribe to podcasts about almost anything: science, history, sports, storytelling, true crime, comedy, or even shows where people just chat about books or video games.

Podcasts became popular in the early 2000s when people realized they could create their own radio-like shows and share them with the world without needing a radio station.

What makes podcasts special is their convenience and variety. You might listen to a podcast while riding in the car, doing chores, or going for a walk. Some podcasts teach you things, like how the ancient Romans built their aqueducts. Others tell gripping stories, interview interesting people, or make you laugh. Unlike radio, you control what you hear and when you hear it.

Many podcasts release new episodes weekly, and listeners often feel like they get to know the hosts over time. Some podcasts are just one person talking into a microphone; others have multiple hosts, guests, sound effects, and music. Anyone with a microphone and something interesting to say can start a podcast, and sharing it online helps people find it.