A Little Bit Of Science

Brain-eating amoebas, climate change, economists, and Leonardo da Vinci’s robot lion all collide in this week’s episode. We dig into how warming freshwater is helping dangerous amoebas spread into new places, why these rare but terrifying organisms are linked to water going up the nose, and what that means for swimmers, public health, and the very specific fear of warm lakes. It is science, climate, and nightmare fuel all in one neat package. We also unpack a strange finding from economics research. The more economists agree with each other, the more their views can drift away from the general public. It is a fascinating look at expert consensus, groupthink, public opinion, and why economic theory can sometimes feel completely detached from real life. If you have ever wondered why economists sound like they are living on a different planet, this one may help. Then we head back to the Renaissance for one of the greatest flexes in science and engineering history. Leonardo da Vinci reportedly built a mechanical robot lion that could walk and reveal flowers from its chest, blending robotics, invention, art, and spectacle centuries before modern technology caught up. If you love weird science, history, innovation, robots, and bizarre true stories, this episode is for you.   CHAPTERS: 00:00 Introduction 01:10 Brain-Eating Amoeba Basics 02:43 How It Infects You 03:57 Warming Spreads the Risk 04:39 Economists vs Everyone 10:10 Assumptions and Governance 11:03 Medici Exile Storytime 12:23 Bologna Power Play 13:07 Medici Politics Banter 14:32 Da Vinci Gift Idea 16:46 Robot Knight Blueprint 18:48 Building the Lion 19:44 Courtroom Lion Reveal 23:22 Modern Art Machines 24:43 Ratings and Farewell   SOURCES: https://www.aeaweb.org/articles/pdf/doi/10.1257/aer.103.3.636 https://www.sciencealert.com/brain-eating-amoebas-may-pose-a-growing-global-threat-scientists-warn https://www.history.com/articles/da-vinci-robotic-lion https://www.history.com/articles/7-early-robots-and-automatonsSee omnystudio.com/listener for privacy information.

Conspiracy theorists hate uncertainty, a mushroom hot pot in China can apparently summon tiny imaginary people, a bunch of seeds have been sitting underground since the 1800s waiting for their moment and scientists are trying to quantify why words like boobs are funny. This week is a mixed bag of psychology, botany and childish humour, which is basically the entire scientific enterprise when you strip away the grant applications. We start with conspiracy thinking and why it is often less about facts and more about feelings. Research suggests people who lean hard into conspiracies can struggle with ambiguity and prefer simple explanations in a complicated world. Certainty feels good, chaos feels awful and conspiracy stories offer villains, motives and a neat ending. Even when the story is wrong. Then we head to Yunnan, China, where prized mushrooms can cause hallucinations if they are eaten too early, including reports of seeing tiny people. Researchers still have not nailed down the exact chemical responsible, and it may be a mix of biology, preparation and expectation. The takeaway is simple. If the locals tell you to cook the mushrooms properly, listen. We look at one of the longest running experiments in science, where seeds buried in glass bottles in the 1800s are still being dug up and tested to see what can germinate. We also dip into the science of funny words and why certain sounds and associations make some words reliably hilarious. So, stay curious, cook your hot pot properly, and if you start seeing tiny people, maybe stop eating the mushrooms.   CHAPTERS: 00:00 Introduction 00:48 Conspiracy Believer Traits 03:13 New Study On Coverups 05:14 Ambiguity And Unfairness 06:42 Skepticism Vs Conspiracy 07:59 Mushroom Hot Pot Warning 10:19 Tiny People Hallucinations 14:01 Hunting The Active Compound 17:35 Seed Bottle Time Capsule 21:24 Custodians And Map 21:56 Bottles Remaining Timeline 23:12 Succession And Secrecy 24:51 2021 Dawn Dig 26:30 Why The Experiment Matters 29:10 Long Term Projects 30:48 Science Of Funny Words 36:31 Modeling Humor Categories 40:21 Phonemes And Incongruity 43:22 Destroying Humour And Wrap   https://www.sciencedirect.com/science/article/abs/pii/S0092656622000423 https://futurism.com/health-medicine/conspiracy-theories-psychology  https://www.nytimes.com/2021/04/21/science/beal-seeds-experiment.html  https://magazine.wfu.edu/2022/10/05/unearthing-time-in-a-bottle/  https://www.sciencealert.com/the-worlds-longest-running-lab-experiment-is-almost-100-years-old?utm_source=news.sciencealert.com&utm_medium=newsletter&utm_campaign=superagers-have-two-key-advantages&_bhlid=8fd449a2c8ea1d56a84867da881e4444546af69c  https://www.mentalfloss.com/science/15-longest-running-scientific-studies-history https://people.howstuffworks.com/why-poop-and-wiggle-are-funny-words-according-to-science.htm?utm_source=HowStuffWorks+Newsletter&utm_medium=email&utm_campaign=themed-words-3-6-25See omnystudio.com/listener for privacy information.

Venting might be making you angrier, Neanderthals apparently had a type, and unborn babies are already forming strong opinions about kale. This week we bounce from modern psychology to ancient DNA to fetal facial expressions, with a quick detour into pokie machines and how they might be made a little less addictive. We start with a meta analysis suggesting venting is not the healthy release we have been sold. Instead of calming you down, it can keep your body fired up and make the anger stick around longer. The less satisfying fix is also the more effective one, doing things that lower arousal like breathing, yoga, and anything that stops you replaying the same rant on loop. Then we head back to prehistory, where research suggests Neanderthal DNA patterns point to pairings that may have involved Neanderthal men and human women more often than the reverse. The details are complicated, but the headline is simple. Neanderthals are not just history, they are part of us, and the human story has always been messier than we like to admit. Finally, we look at a study that might explain why some people hate vegetables with the passion of a thousand suns. Fetuses exposed to carrot flavours appeared to react more positively than those exposed to kale, hinting that taste preferences may start before birth. We wrap up with a surprisingly practical idea for pokie machines, adding sounds for losses as well as wins to make the experience less psychologically sneaky. CHAPTERS: 00:00 Venting Myth  02:40 Science Debunks Catharsis 04:06 Meta Analysis Breakdown 05:40 Calm Down Not Amp Up 06:59 Jogging And Anger 09:25 Why We Love Anger 10:53 Play Metal And Fun 11:48 Neanderthal DNA Mystery 13:07 Who Mated With Whom 14:17 Neanderthal Dating Bias 15:16 Hybrid Myths and Mechanics 16:28 Picky Eaters Rant 18:54 Fetuses Taste Flavours 20:08 Carrot Smiles vs Kale Grimaces 23:30 Pokies Need Losing Sounds 27:47 Petition and Sign-Off SOURCES: Interbreeding between Neanderthals and modern humans was strongly sex biased Why I risked prison to add a 'Losing Sound' to poker machines Flavour Sensing in Utero and Emerging Discriminative Behaviours in the Human Fetus https://www.sciencealert.com/venting-doesnt-reduce-anger-but-something-else-does-review-finds See omnystudio.com/listener for privacy information.

This week, AI is casually reaching for the nuclear button, a Norwegian scientist has accidentally recreated something that looks a lot like Havana Syndrome, and a brain lesion has turned a marathon runner into an intense foodie. It is a neat little trio of stories that sits right on the edge of science fiction, except the uncomfortable part is that it is all real. We start with simulated war games where major AI models were put in charge of military decision making. The result is grimly simple. In these scenarios, the systems chose to deploy tactical nuclear weapons most of the time, showing none of the cultural taboo or restraints humans have built around nuclear escalation. Then we head to Norway, where a scientist tested a pulse energy device on himself to see if it could plausibly cause Havana Syndrome-style symptoms. It did. Which is both a scientific result and a personal mistake, and it raises the obvious question of what happens when this kind of technology moves from theory to wider interest. Finally, we look at Gorman Syndrome, a neurological twist where a brain lesion appears to flip someone from long distance running to an intense obsession with fine food. It is funny, strange, and a sharp reminder that personality can be less fixed than we like to believe.    CHAPTERS:   00:00 Fire Alarm AI Fail 00:46 LLMs in War Games 06:34 Nukes and No Surrender 09:36 Pentagon Wants Anthropic 10:33 Testing AI Weirdness 12:50 Dead Cow Prompt Update 15:07 Car Wash Question Trap 18:10 Lost in the Middle Fix 22:01 Maps and Recursive Islands 23:32 Chasing Longest Line of Sight 26:53 All the Views Map 27:49 What Limits Sightlines 29:23 Havana Syndrome Emerges 31:58 Theories and Investigations 35:14 Norwegian Microwave Experiment 42:20 Official Stance and Confusion 44:04 Extreme Foodie Case Study 47:39 Gourmand Syndrome Explained 51:21 Brain Lesions and Cravings SOURCES: AIs can’t stop recommending nuclear strikes in war game simulations AI Arms and Influence: Frontier Models Exhibit Sophisticated Reasoning in Simulated Nuclear Crises The Longest Line Of Sight https://pub.towardsai.net/the-car-wash-question-that-breaks-every-ai-and-the-2-word-fix-nobody-talks-about-21db5c78fc29 https://www.vice.com/en/article/brain-damaged-gourmand-syndrome-foodies-cant-register-your-disgust/ https://www.iflscience.com/gourmand-syndrome-when-brain-injuries-spark-an-obsessive-craving-for-fine-food-and-gastronomy-82546 https://www.smithsonianmag.com/arts-culture/gourmand-syndrome-26067295/ https://www.washingtonpost.com/national-security/2026/02/14/havana-syndrome-cia-norway-experiment/ https://en.wikipedia.org/wiki/Havana_syndrome https://www.scientificamerican.com/article/pentagon-reportedly-testing-radio-wave-device-linked-to-havana-syndrome/ https://edition.cnn.com/2026/01/13/politics/havana-syndrome-device-pentagon-hsi See omnystudio.com/listener for privacy information.

This week we have hippos with hidden bits, hearts that take a mechanical detour, and a medical case study that will make you sit down and reconsider every life choice that led you to having a body. It is science at its best and worst, fascinating, useful, and deeply inconvenient. We start at the zoo, where hippo castration is a real population control tool, partly to manage breeding and partly to reduce aggression. The catch is hippo anatomy is not built for human convenience, with internal testes that turn the whole procedure into a high stakes game of hide and seek inside a very large, very grumpy animal. Then we move from hippos to hearts, looking at cardiac surgeries that use a heart lung bypass machine. Some patients report a temporary cognitive dip afterward, often called pump brain, and nobody is fully sure why it happens. It might be the machine, the stress of surgery, or subtle changes in blood flow and inflammation, but the mystery is still very much alive. Finally, we end with a story that makes every listener cross their legs in sympathy. A man developed a rectal urethral fistula after previous surgery, likely linked to a catheter complication during a coma, and his internal plumbing rerouted itself in the most unhelpful way possible. The takeaway is simple. Bodies are fragile, embarrassment is useless, and if something feels wrong, get it checked. CHAPTERS: 00:00 Hippo Castration Study 05:50 Why Zoos Castrate Hippos 08:11 Internal Anatomy Surprise 13:04 Surgery Method and Timing 15:14 Recovery and Blood Sweat 17:12 Aftereffects and Social Dynamics 18:11 Science Communication Pivot 18:46 Alcohol Messaging Study Setup 21:27 Violence as Communication 21:57 Alcohol Messages That Work 23:25 Counting Drinks Cancer Risk 25:08 Comfortable With Surgery 25:49 Heart Bypass Miracle Machine 29:12 Pumphead Cognitive Decline 33:43 Why the Pump Makes You Dumber 35:46 Fistula Case From Catheter 42:34 Spinosaurus Tank Top Sendoff SOURCES: Rosetta scientist Dr Matt Taylor apologises for ‘offensive’ shirt Astonishing Spinosaur Unearthed in The Sahara Is Unlike Any Seen Before There's One Simple Method to Lower Alcohol Intake, And It Works  A randomized controlled trial of the effectiveness of combinations of ‘why to reduce’ and ‘how to reduce’ alcohol harm-reduction communications Westbury, C., & Hollis, G. (2019). Wriggly, squiffy, lummox, and boobs: What makes some words funny? Journal of Experimental Psychology: General, 148(1), 97–123. https://doi.org/10.1037/xge0000467 https://people.howstuffworks.com/why-poop-and-wiggle-are-funny-words-according-to-science.htm? https://www.sciencedirect.com/science/article/pii/S000169182600171X https://futurism.com/health-medicine/exercise-cardio-stress-research https://www.sciencedirect.com/science/article/abs/pii/S0093691X13004275 https://www.discovermagazine.com/why-its-nearly-impossible-to-castrate-a-hippo-4775 https://futurism.com/neoscope/doctors-rectourethral-fistula https://www.cureus.com/articles/68327-a-curious-case-of-rectal-ejaculation#!/See omnystudio.com/listener for privacy information.