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PODCAST

The Science of Everything Podcast

I discuss a variety of topics in both the natural and social sciences, exploring the many fascinating insights that the scientific method yields about the world around us.

science natural sciences

All Episodes

70:28

Episode 155: Embryology and Development

The Science of Everything Podcast ·

2025/10/24

An introduction to the process of development, beginning with fertilisation and covering the stages of blastocyst formation, implantation into the uterus, gastrulation and its constituent cell movements, neurulation and the role of the notochord, and the beginnings of organogenesis. We also discuss the differences in gastrulation between protostomes and deuterostomes, along with the many specialised structures found in amniotes to protect the growing embryo from drying out. We conclude with overview

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91:46

Episode 154: Magnetic Resonance Imaging

The Science of Everything Podcast ·

2025/09/23

An overview of Magnetic Resonance Imaging (MRI), beginning from the basic physics of nuclear magnetic resonance, and covering the use of radiowaves to excite nuclear spin states, and the T1 and T2 modes of relaxation. We then explore how these phenomena are used to produce 3d images, including magnetic field gradients, frequency encoding, phase encoding, and Fourier transforms. We conclude with a discussion of functional imaging, including the haemodynamic response, the BOLD signal, echo planar

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01:14:03

Episode 153: Low Carb Diets

The Science of Everything Podcast ·

2025/06/09

A review of the carbohydrate insulin model of obesity and the related proposal that low carbohydrate diets are superior to traditional low fat diets. I begin with a discussion of the theory behind the carbohydrate insulin model, and then assess its plausibility using relevant evidence from rodent studies, dietary studies, ahd controlled feeding experiments. I argue that the scientific evidence does not support the alleged benefits of low carb diets for weight loss in otherwise healthy adults

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01:16:05

Special Episode: Brain Preservation and Abolishing Death

The Science of Everything Podcast ·

2025/05/04

An interview with Ariel Zeleznikow-Johnston, author of the book 'The Future Loves You: How and Why We Should Abolish Death'. We begin by discussing how best to define death, focusing on the idea of death as the permanent disruption of psychological identity, and how such identity is constituted by our personality, desires, and memories. We then consider the science of brain preservation, including the recently-developed technique of Aldehyde-Stabilized Cryopreservation, and how it could be used to

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01:16:34

Episode 152: Obesity, Diabetes, and Hypertension

The Science of Everything Podcast ·

2025/03/29

A review of the science between the metabolic syndrome, including discussion of obesity, diabetes, hypertension, and hyperlipidemia. We discuss the pathophysiology of how enlargement of adipocytes disrupts metabolic signalling pathways and leads to buildup of lipid intermediates. We then consider how these effects impair health, examining the causes of insulin resistance, atherosclerosis, and dysregulation of blood pressure. We conclude by looking at how such symptoms lead to pathology and increased

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01:14:45

Episode 151: Diet and Nutrition

The Science of Everything Podcast ·

2025/02/01

An introduction to human nutrition, in which we discuss the nutritional importance and role of carbohydrates, fats, proteins, vitamins, and minerals, before considering the effects of malnutrition, how it is measured, and its prevalence around the world. We conclude with an analysis of basal metabolic rate, reviewing evidence concerning its variability across persons and factors that affect it. Recommended pre-listening is Episode 18: Biochemistry BasicsIf you enjoyed the podcast please consider

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01:17:11

Episode 150: How Home Appliances Work

The Science of Everything Podcast ·

2024/12/31

An exploration into the exciting world of home appliances and devices. We begin with a journey through the kitchen, discussing the design and operating principles behind the refrigerator, rice cooker, convection oven, microwave, and dishwasher. We proceed to the laundry to examine how the washing machine, vacuum cleaner, clothes iron, and dryer work. Finally we take a bathroom break and consider how the flush toilet, sinks, and plumbing work. If you enjoyed the podcast please consider supporting

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44:58

Episode 149: The Psychology of Personality

The Science of Everything Podcast ·

2024/11/30

An introduction to the psychological study of personality, beginning with a definition of what is and is not personality and a brief history of the development of the field from Freud and Jung through the Myers-Briggs Indicator and the modern trait theories. I then discuss the Big Five personality traits, covering openness, conscientiousness, extraversion, agreeableness, and neuroticism, along with validation and criticisms of this model. I conclude with a brief discussion of values and narrative

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01:09:05

Episode 148: Control of Gene Expression

The Science of Everything Podcast ·

2024/09/30

An introduction to the processes by which cells control which genes are expressed. We begin with an overview of why genetic regulation is necessary and the key stages where such regulation occurs, including key concepts such as transcription factors and DNA binding domains. We then discuss prokaryotic gene regulation, focusing on the lac operon in E. coli. We then expand the discussion to cover the various mechanisms of eukaryotic gene regulation, including chromatic remodelling, transcriptional

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01:13:51

Episode 147: Genetic Mutation and Repair

The Science of Everything Podcast ·

2024/08/31

Here we survey of the causes and consequences of genetic mutation, including a discussion of mechanisms of endogenous and induced mutations, rates of mutation, types of single nucleotide mutations, and the phenotypic effects of mutation. We also discuss various mechanisms for detecting and repairing genetic mutations, including base excision repair, DNA mismatch repair, nucleotide excision repair, double strand break repair. We conclude with an examination of large-scale chromosomal changes,

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01:22:34

Episode 146: Mendelian Genetics and Inheritance

The Science of Everything Podcast ·

2024/07/29

An introduction to classical Mendelian genetics, in which we discuss Mendel's experiments with peas and the laws of heredity that he discovered, including inheritance of one allele from each parent, the law of dominance, and the law of independent segregation. We then consider more complex cases of genetic inheritance, including sex-linked traits, incomplete dominance, codominance, and epistasis. The episode concludes with a discussion of quantitative traits determined by many genes, including how

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01:25:43

Episode 145: Relativity and Black Holes

The Science of Everything Podcast ·

2024/06/30

Continuing our series on General Relativity, we discuss the derivation of the Schwarzschild metric as a vacuum solution to Einstein's Field Equations, and analyse the physical meaning of this solution, including the properties of the singularity, event horizon, and effects of time dilation and length compression. We then consider how solutions like the Schwarzschild metric yield testable predictions such as gravitational lensing and graviational redshift, which serve as important evidence in support

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01:18:48

Episode 144: Anthropogenic Climate Change

The Science of Everything Podcast ·

2024/05/29

Our climate change series concludes with a discussion of the various lines of evidence indicating that recent warming is the result of human-produced greenhouse gases, including greater warming at night, cooling of the stratosphere, and relative depletion of C14 in the atmosphere. We then consider the various expected impacts of climate change, including increased extreme weather events, acidification of the oceans, changes to crop yields, and affects on various ecosystems. We end with an analysis

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01:05:50

Episode 143: Climate Modelling

The Science of Everything Podcast ·

2024/04/28

An overview of climate models, beginning with a summary of the major types of models, and then a more detailed disussion of hte primitive equations and parameterised feedbacks that characterise the widely used Atmospheric General Circulation Models. We also discuss techniques for model validation and some evidence regarding the accuracy of various climate models. Recommended pre-listening is Episode 142: The Greenhouse Effect.If you enjoyed the podcast please consider supporting the show by making

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01:23:05

Episode 142: The Greenhouse Effect

The Science of Everything Podcast ·

2024/03/30

A detailed discussion of the greenhouse effect and its impact on Earth's climate. We begin with a discussion of Earth’s energy budget, the various greenhouse gases and their interactions with longwave radiation, and a summary of major sources of greenhouse gas emisions. We then examine the mechanisms of the greenhouse effect in more detail using the idealised greenhouse model and radiative transfer models. We conclude with an analysis of the sensitivity of Earth's climate to changes in greenhouse

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46:31

Episode 141: Natural Climate Change

The Science of Everything Podcast ·

2024/02/29

An overview of the natural mechanisms by which climate changes over time. Beginning with an introduction to the concepts of radiative forcing and climate sensitivity, we then discuss solar forcing, orbital changes, volcanic eruptions, and silicate weathering, covering how each process operates and the effects it has on Earth's climate over varying periods of time. Recommended pre-listening is Episode 140: A History of Earth's Climate.If you enjoyed the podcast please consider supporting the show by

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50:12

Episode 140: A History of Earth's Climate

The Science of Everything Podcast ·

2024/01/31

A journey through the history of Earth's changing climate, in which we explore how Earth's climate has fluctuated over the past billion years. After reviewing the various temperature proxies used to estimate past climactic conditions, we discuss the varying hothouse and icehouse periods of Earth's history, the onset of the Quarternay Ice Age, the current interglacial period, the anomoly of the Younger Dryas, the Medieval Warm Period and Little Ice Ages, and the rapid rise in temperatures during the

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01:13:20

Special Episode: Dinosaurs in Popular Culture

The Science of Everything Podcast ·

2023/12/23

In this special collaboration with I Know Dino podcast, we discuss the history and impact of dinosaurs in popular culture and media. We cover the history of the scientific study of dinosaurs and how their presentation in media has changed over time with new discoveries, and what aspects of their behaviour and appearance tend to be presented accuracy or inaccurately. We also discuss lesser-known aspects of understanding dinosaurs, such as how changes in the atmosphere and ecosystem would affect

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01:17:46

Episode 139: Cybersecurity and Cryptocurrencies

The Science of Everything Podcast ·

2023/10/15

An introduction to cryptography, internet security, and cryptocurrency, beginning with an overview of RSA cryptography and covering the use of public and private keys and their incorporation into the Transport Layer Security protocol used for secure internet communications. We then examine the key features of cryptocurrencies, including the blockchain, proof of work consensus mechanism, the use of hash functions, and the role of crypto mining. We conclude with a discussion of some of the advantages

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59:20

Episode 138: Biochemistry and Metabolism

The Science of Everything Podcast ·

2023/08/31

A discussion of the metabolic pathways involved in breaking down proteins, carbohydrates, and lipids into simple components, extracting their energy, and building back up into more complex components needed for bodily function. We cover glycolysis, the citric acid cycle, lipolysis, beta oxidation, amino acid deamination, gluconeogenesis, fatty acid synthesis, and amino acid synthesis. Our overall focus is on the central role of acetyl-CoA and how the different metabolic pathways interact and

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179 results

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