Every weekday I make an hour commute to and from work. Along with music, I listen to podcasts using the Apple podcast app. They are free and there are hundreds of channels you can chose to subscribe to.
There is literally a channel for any topic of your interest. Yesterday on my way back home, I listened to a Freakonomics Radio episode on why we feel like we have it harder than everyone else, very interesting stuff! By the end of each commute I learn something new. It’s satisfying and a great way to feed your intellectual curiosity.