"how stuff works" is interesting and funny at times, but I highly recommend you look for episodes that seem interesting instead of listening 1 by 1. It gives you that itch of weird fun facts you can bring up in conversation.
"anthropocene review" based off the author's (John Green) book and is more of a continuation of topics and essays you find from the book. Pretty much an educational exploration of how humans have changed the earth and their environment. Similarly, a bit to how stuff works but more serious and in-depth.
"Duncan Tressel family hour" if you liked the netflix show "midnight gospel" this is the podcast the audio comes from. Adult themes though so I wouldn't listen if you have young kids in the car. Think of wacky and profound interviews depending on the guest. A similar format to joe rogan but with a less problematic host. He has on people who practice ceremonial magic and also has civil right activists that talk about their stories. I remembered a few months ago he had a Daoist monk on that had a Near death experience and they talked about it. My one caveat is, Duncan isn't always the best host imo. He at times seems to insert himself into the interview with a comment when i wish he would just let the interviewee continue.