James O'Brien's Mystery Hour

James O'Brien's Mystery Hour

If you've ever wondered "why", then this is the hour for you. Sometimes simple, sometimes intelligent, but almost always entertaining, probably the best hour of radio you could ever download!
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Povzetek epizode

In this episode of Mystery Hour, James O'Brien and various guests explore a wide array of scientific, historical, and everyday curiosities. The discussion covers everything from the biological reasons why dog paws smell like popcorn and how ancient civilizations developed base-12 mathematics to the science behind mushroom flavor intensification and the visibility of the moon during the day. Listeners also delve into the mysteries of modern life, investigating why margarine consistency has changed, the mechanics of peanut butter oil separation, and the psychological implications of arm-crossing. The episode concludes with historical insights into battlefield casualty practices and the biological limitations that prevent strawberries from overrunning the world.

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This is before I see any blood or before I feel any pain, I get a taste of metal in my mouth.

00:05:51 · A caller describes a strange sensory warning sign he experiences when cutting himself while shaving his head.

The historical answer would be because that's what the people who first started recording time decided to do, to which you respond by saying why, to which I respond by saying, well, it's actually really easy to divide.

00:15:44 · The host explains the logical and historical basis for using a base-60 or base-12 system for measuring time.

Dogs cannot sweat on their skin, just on their feet. So that and the natural occurring bacteria they have on their feet... which gets stuck between the toes and the fur and the knee support, makes it smell a bit like popcorn or tortilla chips.

00:24:03 · The host provides the biological explanation for why some dogs' paws emit a savory, snack-like scent.

So, you know, you might run your hands through your hair and then someone else will run their hand from there. But I think it's... Also got an evolutionary dimension because if you're folding your arms, you're telling the person that you are with that you are not a threat and you are not going to do them any harm.

00:29:56 · The host explains the psychological and evolutionary reasons why people might subconsciously mimic arm-crossing behavior.

Now, depending on the recipe normally driven by cost of oils compared to water and air, they may reduce the percentage of oil or fat in the margarine. So therefore, the consistency is therefore softer.

00:42:19 · The guest explains how the ingredient ratios in margarine affect its texture.

Epizode

746-

I've got to smell my dog's paws

In this episode of Mystery Hour, James O'Brien and various guests explore a wide array of scientific, historical, and everyday curiosities. The discussion covers everything from the biological reasons why dog paws smell like popcorn and how ancient civilizations developed base-12 mathematics to the science behind mushroom flavor intensification and the visibility of the moon during the day. Listeners also delve into the mysteries of modern life, investigating why margarine consistency has changed, the mechanics of peanut butter oil separation, and the psychological implications of arm-crossing. The episode concludes with historical insights into battlefield casualty practices and the biological limitations that prevent strawberries from overrunning the world.

10 sep. 2026
745-

What's the point of bay leaves?

In this episode of Mystery Hour, James O'Brien and guests explore a wide range of listener inquiries, from the historical ambiguities of leap year dates to why cats are drawn to square objects. The show delves into the science of taste through the concept of umami, investigates the mechanics behind revolving doors, and examines how modern television uses Automatic Content Recognition for targeted advertising. The episode also features a deep dive into industrial history with an interview with Brian, a retired factory worker, who discusses his 32-year career at Heinz and the technical evolution of can production.

03 sep. 2026
744-

Smallest living thing in the human body?

James O'Brien hosts a segment of Mystery Hour, engaging with callers on a wide array of scientific, historical, and trivia-based questions. The episode explores topics ranging from the history of chef uniforms and the chocolate textures of Cadbury bars to biological inquiries regarding amoebas, rodent tooth growth, and the scale of viruses. The conversation also delves into the mechanics of the water cycle, the unique business model of Sam Smith's pubs, and the physiological sensations of brain freeze. Through listener interactions, the host explores various curiosities including film trivia involving Frank Sinatra and the sensory experiences of synesthesia.

27 avg. 2026
743-

Why can we smell rain before it falls?

In this episode of the 'Mystery Hour' on LBC, James O'Brien and guests answer a diverse range of listener questions. The discussion covers human physiology, such as how we regulate body temperature and why we can smell rain before it falls, alongside topics like the legal nuances of court oaths and the behavior of seagulls. The episode also explores technical and scientific curiosities, including the mechanics of maritime weight limits via the plimsoll line, the impact of water density on buoyancy, and the architectural reasons behind arch-shaped railway stations. Additional segments touch upon gardening, specifically regarding drought-resistant weeds and tree fern care.

20 avg. 2026
742-

Why does posh slang stay the same?

In this episode of Mystery Hour, James O'Brien and various callers explore a wide range of scientific and social curiosities. Topics include the physics of opening a soda can in space, the behavior of eggs underwater, and why toddlers can accelerate so quickly to escape adults. The conversation also delves into linguistic evolution between urban and posh slang, the visibility of meteor showers, and biological mysteries such as how SPF usage affects freckles and the evolutionary theories behind peripheral vision.

13 avg. 2026