The entire history of human expression, slightly abridged
Here are some examples of great audio essays–
Also worth the listen is Katie Davis’s “Inner City Reality Check” from Housesound/PRX. This isn’t technically an audio essay–there are acts and tracks and ambient–but the piece does a great job of showing a person paying close attention to their surroundings and the people around them, and the stories that are all around us all the time. Davis calls it “commentary with tape,” and it’s a genre that you might want to mess around with.