The podcasts I've been (half) listening to:
PBS Space Time Cosmology, quantum physics, astronomy, space exploration and whether Roger Penrose may be a Jedi ninja.
PBS Eons. on what we know of the history of life in this planet
It's Ok to be Smart wherever curiosity seems to lead Dr Joe Hanson
Fermilab Sub-Atomic Stories
Sean Carroll's Mindscape where he interviews people on fields far beyond physics.
also occasionally various podcasts by Prof. Jim Al-Khalili
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