Dan Carlin’s Hardcore History -Dan Carlin has a voice that makes everything fascinating. His series about WW1 ‘A Blueprint to Armageddon’ gives such an atmospheric insight into the realities of this conflict. The episodes are long, but you will be doing a lot of driving and have plenty of time to listen.
Radiolab– Such a variety of well researched and produced stories on subjects you never predicted would excite you. Updated regularly with a large back catalogue, download whichever catches your eye. ’60 Words’ is a discerning look at the legal language used in the USA post 9/11 to authorize military action.
My Dad wrote a Porno– Full disclosure, this is not for the faint hearted and is probably no good if you are on the road with your parents. The writing and Rocky Flinstone’s (the author) distinct lack of knowledge about female anatomy combine to make hilarious listening.
BBC World Service- The Documentary Touches a huge range of issues from the political to the curious. Updated regularly with a whole host of concepts.