@micke Then, in order from Serious to Funny, I've been enjoying
Tides of History with Patrick Wyman (painting very vivid pictures of the ancient world)
History of Africa (very interesting stories from an underappreciated part of the world)
Leech Fest (medical history)
We're Not So Different (informal, very funny, very leftist)
I also enjoyed the So Strangely podcast about music theory and music information retrieval, but they haven't posted for a good while.