I second the recommendation for NPR podcasts- in general they will be pretty clean; depending on the age your kid might even find it interesting.
We are long time fans of Wait Wait Don't Tell Me
I love It's Been a Minute with Sam Sanders (from NPR) and 13 year old DD is also a fan.
We will listen to Pop Culture Happy Hour together if the topic is kid-related (they reviewed the new Babysitters Club show!)