The End is Always Near: Apocalyptic Moments from the Bronze Age Collapse to Nuclear Near Misses | 
pickI've been a fan of Dan Carlin's podcast, Hardcore History, for years, so this was a no-brainer purchase. Much of the material here will be familiar to any regular listeners like myself, but that doesn't make it any less entertaining. The overarching theme is that the relative peace and stability we've been living through for half a century is an anomaly, and that history shows that societal collapse is always much nearer than people realize.
The_Penniless_Author @Milara He does have a bachelor's in History, though as he freely notes on his show he's not a historian (though he's had several renowned historians as guests). Basically, he's an extremely well-read fan of history with a background in radio, which makes his podcast a lot more listenable than most. He's been doing HH since 2006, so it's one of the oldest/best podcasts still around. The length and detail of some of his episodes are remarkable. 3y
rwmg I used to listen to him and my impression was that he is very good and knows his stuff. I would use him to time my exercise walks, so I panicked rather when he had a 5-hour episode on Julius Caesar and stopped listening. 3y
The_Penniless_Author I tend to think of his shows like doctoral dissertations tweaked for the radio. His long-form stuff is actually my favorite. The four-part series about the eastern front in WWII was about 6 or 7 hours, and all of it was fantastic (but yes, too long for a walk, unless you're feeling particularly ambitious 🙂). 3y
Suet624 I listened to a book about the history of the world and it was just war after war after war. 3y
