@timapple Depends on the subject. For general science history I'm currently listening to "Faraday, Maxwell, and the Electromagnetic Field: How Two Men Revolutionized Physics". The story is great. The narrator is a little odd with the attempted Scottish accents but is understandable at least. The "Simply ..." series is also good for science biography/history. I've listened to "Simple Gödel" and "Simply Dirac".