I love exploring interesting ideas of alternative worlds and what-ifs.
Are there any good Podcasts on this subject?
Good Podcasts are defined as ones discussing creative fictional words and situations, that could inspire imagination to create similar ones. In addition they should be interesting, clearly understandable, and either have existing highly recommended episodes or show consistent quality and be ongoing and active.
This question is not looking for Podcasts on techniques and how to build a world. It is looking for information on existing worlds and ideas for new ones.
Moderator note: Worldbuilding Resource questions are on topic. The number of different worldbuilding podcasts is low enough that further criteria is not thought to be needed at this time.