99 Percent Invisible Roman Mars’s wonderful podcast about so many different aspects of the world we live in.

Space Rocket History This podcast isn’t getting any new episodes, but covers the history of the space race all the way up to the Apollo-Soyuz Test Mission. Michael Annis goes into wonderful detail of wach mission and covers the US, USSR and other space programs.

Opposing Bases Two air traffic controllers who are also rated pilots talking about how air traffic works and answering listener questions. How nice.

Aviation News Talk Max Trescott’s podcast with general aviation news and practical flying tips.

Airplane Geeks A long running podcast covering news from just about every facet of the aviation world.

Ken and Robin talk about stuff Ken Hite and Robin Laws are two RPG designers and writers. This long-running podcast covers a variety of topics related to all things RPG, nerd and gaming.

Imaginary Worlds A podcast about imaginary worlds and how we create them.

The Old Pilot’s Plane Tales A sub-podcast of the Airline Pilot Guy podcast by Captain Nick, a retired Virgin Atlantic captain. A diverse range of aviation and aviation history topics are covered, and Captain Nick’s voice is pretty easy to listen to.

On the wind and The Quarterdeck Two podcasts produced by 59 North covering sailing and interviews with a wide range of personalities from the cruising and ocean sailing world.