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Explain This
Jin Kim
71 episodes
1 month ago
How come salamanders can regenerate limbs while we can't? Can we use stem cells to regrow organs for transplanting? What is an iPSC and why is it a total gamechanger? When is a human being considered first "alive"? All of this and more in this hot, fresh episode exploring the fascinating world of stem cells and their potential applications! Listen to the end of the episode for a special announcement. Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: ...
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Science
Education,
Self-Improvement
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How come salamanders can regenerate limbs while we can't? Can we use stem cells to regrow organs for transplanting? What is an iPSC and why is it a total gamechanger? When is a human being considered first "alive"? All of this and more in this hot, fresh episode exploring the fascinating world of stem cells and their potential applications! Listen to the end of the episode for a special announcement. Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: ...
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Science
Education,
Self-Improvement
Episodes (20/71)
Explain This
71 - Stem Cells
How come salamanders can regenerate limbs while we can't? Can we use stem cells to regrow organs for transplanting? What is an iPSC and why is it a total gamechanger? When is a human being considered first "alive"? All of this and more in this hot, fresh episode exploring the fascinating world of stem cells and their potential applications! Listen to the end of the episode for a special announcement. Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: ...
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1 month ago
38 minutes

Explain This
70 - Computers
How does a computer use a bunch of 0s and 1s to show you cat memes? What do 19th-century weaving looms have to do with the "bugs" in modern software? And how do I know what specs to look for if I want a smooth-running computer or phone? This week, we're opening up the magic box on your desk to explain how computers actually work. Transistor diagram (source: ExplainThatStuff) Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: https://bsky.app/profile/e...
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3 months ago
49 minutes

Explain This
69 - Prions
Why shouldn't you eat brains? How are cannibalism and mad cow disease linked? Can Jin say "transmissible spongiform encephalopathy" three times as fast? Let's learn about one of the most terrifying, unstoppable infectious diseases we know about: prions. Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: https://bsky.app/profile/explainthiscast.bsky.social Instagram: https://www.instagram.com/explainthiscast/ Youtube: https://www.youtube.com/@explainth...
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4 months ago
35 minutes

Explain This
68 - Monkeysphere
Do you really know all of your Facebook friends? How many people can you know personally? Why does city life feel so isolating? Join Jin as he unpicks Dunbar's Number, the "Monkeysphere," and its fascinating implications for our social lives! Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: https://bsky.app/profile/explainthiscast.bsky.social Instagram: https://www.instagram.com/explainthiscast/ Youtube: https://www.youtube.com/@explainthiscas...
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4 months ago
43 minutes

Explain This
67 - Caesarean Section
Why are some babies born through surgery instead of by natural delivery? Is a Caesarean section better for the mum and baby? What is the dark history behind the C-section? Let's explore the miraculous and icky world of how we come into the world! Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: https://bsky.app/profile/explainthiscast.bsky.social Instagram: https://www.instagram.com/explainthiscast/ Youtube: https://www.youtube.com/@explainthiscast&...
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6 months ago
28 minutes

Explain This
66 - Capitalism
How does our economy work? What does it mean to seize the means of production? How is late stage capitalism ruining my life? And why did so many people lose their jobs in 2008? Jin takes you down the windy rabbit hole of the most prevalent economic system in the world, the history behind how it came about, and whether it's good or evil (or both). CAPITALISM · Céline Tshika Ken Liu - The Perfect Match IMDB - The Big Short Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/expl...
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7 months ago
55 minutes

Explain This
65 - Factoids
Did you know.... that many of your fun facts are just plain wrong? Come join us for a spirited session of "well, actually"s and learn about factoids: facts that aren't, in fact, facts! Thorn Kurzgesagt - We Fell For The Oldest Lie On The Internet Jin's blog - Jineral Knowledge Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: https://bsky.app/profile/explainthiscast.bsky.social Instagram: https://www.instagram.com/explainthiscast/ Youtube: https://ww...
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8 months ago
37 minutes

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64 - Chinese Zodiac
How do you know which Chinese Zodiac animal's year is when? Why is there no Year of the Cat or Year of the Capybara? What's the sexagenary cycle? Let's learn about the Asian counterpart to the Western Zodiac, how it's related to the calendar, and the cute origin story of why the zodiac animals are in the order that they are! Photo of the twelve animals in anthropomorphised statue form at the National Folk Museum in Seoul, Korea Order of zodiac animals, along with the Twelve Earthly Branches ...
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9 months ago
40 minutes

Explain This
63 - Cancer
Why does cancer happen? How come chemotherapy kills cancer but not us? What does my doctor mean when he says I have a "lesion"? We learn all about the emperor of maladies in today's episode, what makes it terrifying, and some of the exciting new ways science has figured out how to fight against it. (Apologies for the shoddy audio quality - I've rearranged my office and my setup is still being optimised! Will try to fix some of the mic booming issues as well...) Email: explainthiscast@gmail...
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9 months ago
54 minutes

Explain This
62 - Sunscreen
What's the best anti-aging cream available? Which is better - physical or chemical sunscreen? Can you get sunburnt through a glass window? What does SPF even mean? Get ready for the coming summer by Slip Slop Slapping some knowledge about how sunscreen works and why you should use it! Electromagnetic radiation spectrum Diagram of UV absorption in sunscreen molecules More detailed explanation of how sunscreen works - Lab Muffin Example of photoaging on a truck driver's face Email: explainth...
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11 months ago
36 minutes

Explain This
61 - Electricity
What is electricity made up of? How do power plants use magnets to generate electricity? What is the largest machine in the world? How can you make a mountain into a battery? Join us for our first one-hour-plus episode as we cover a lot of ground in helping you understand the complex and deep world of electrical physics! Basic circuit Current, voltage, resistance as garden hose courtesy of Freeing Energy Voltaic pile - pictures courtesy of Ted-Ed Electric eel electrocyte anatomy Veritasium ...
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1 year ago
1 hour 5 minutes

Explain This
60 - Literacy
What does it mean to be functionally literate? How does reading help protect you from being manipulated and controlled? Why are books burned and banned in dystopias? Let's delve deep into understanding the sinister social threat of rising illiteracy rates, and why you should give a hoot about reading and writing! Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Twitter: https://twitter.com/ExplainThisCast Instagram: https://www.instagram.com/explainthiscas...
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1 year ago
54 minutes

Explain This
59 - Antibiotics
What is the REAL story behind penicillin? How do antibiotics treat infections? Should we be worried about superbugs taking over the world? Jin geeks out on one of his favourite medical topics and teaches you about our table-turning super weapons against humanity's bane - bacteria. Relevant XKCD comic Alexander Fleming's original petri dishes showing the effect of penicillin Anatomy of bacteria Beta-lactam ring structure Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/ex...
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1 year ago
50 minutes

Explain This
58 - Flight
How do you fly in the sky? What do swoll pecs have to do with flying? Is it true that physics says that bumblebees shouldn't be able to fly? We're back from our hiatus with an exciting episode on how planes, birds and bees take to the sky and soar freely! Airfoil, camber, angle of attack and how Newton's Third Law of Motion creates lift Bernoulli's principle visualised with a wine bottle Video of how various birds move their wings during flight Diagram of how leading edge vortices cling to ...
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1 year ago
44 minutes

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57 - Latitude and Longitude
How can you use the Sun, the stars, and time to measure your location on Earth? Why were clocks instrumental in conquering the seas? How can you use shadows and wells to prove that the Earth is round? Today, we learn all about the science of location, location, location! And the fascinating history of how sailors navigated the high seas before satellites and Google Maps. Latitude and longitude visualised Using latitude and longitude as coordinates Eratosthene's method for calculating Earth'...
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1 year ago
48 minutes

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56 - Sepsis
How do infections kill us? What happens when my immune system overreacts? Why is horseshoe crab blood important in medicine? All these questions and more are answered in today's episode, covering the often misunderstoon topic of sepsis. Step inside my world of emergency medicine, and how we fight against infectious diseases! Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Twitter: https://twitter.com/ExplainThisCast Instagram: https://www.instagram.com/ex...
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1 year ago
41 minutes

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55 - Nuclear Fission
How can you split a supposedly indivisible atom to release a lot of energy? Why was this discovery so controversial in the context of history? What does Einstein have to do with nukes? Are nuclear reactors good or evil? We dive into the nature of the fundamental particles that make up everything in the world, and how we came to harness the awesome yet terrible power that is nuclear energy! Anatomy of an atom Nuclear chain reaction visualised Gun-type vs implosion-type nuclear weapon designs...
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1 year ago
47 minutes

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54 - Western Zodiac
What can star signs tell me about my personality and love life? (spoiler: nothing.) How did the Zodiac come about? Who is the mysterious, hidden thirteenth Zodiac sign? Let's kick off 2024 not with pseudoscience, but some real astronomical science and fascinating Greek mythololgy stories! Image of what the Zodiac band looks like, and each constellation Rod of Asclepius vs Caduceus Example of The Mentalist cold reading Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/expl...
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1 year ago
49 minutes

Explain This
53 - Tobacco (and why you shouldn't smoke)
Why do smokers live 10-18 years fewer on average than non-smokers? What is in cigarette tar and why is it deadly? How can smoking cause impotence? Should I vape? In today's episode, we do a deep dive and tackle the world's greatest cause of preventable death in human society: smoking tobacco! Graph showing relationship between smoking and lung cancer prevalence Diagram of lung anatomy Photo comparison of healthy vs smoker's lungs Email: explainthiscast@gmail.com Facebook: https://ww...
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1 year ago
48 minutes

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52 - Infinity
How can you squeeze in infinite people into an already full hotel? Are some infinities bigger than others? What's the relationship between infinity and zero? Come explore the boundless, magical world of infinity with the help of some fantastical thought experiments! Zig zag method to convert a grid into a line Cantor's diagonal argument visualised Möebius Strip II, 1964 - M.C. Escher Ouroboros Lemniscate symbol in Roman mosaics Email: explainthiscast@gmail.com Facebook: https://www.faceboo...
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2 years ago
46 minutes

Explain This
How come salamanders can regenerate limbs while we can't? Can we use stem cells to regrow organs for transplanting? What is an iPSC and why is it a total gamechanger? When is a human being considered first "alive"? All of this and more in this hot, fresh episode exploring the fascinating world of stem cells and their potential applications! Listen to the end of the episode for a special announcement. Email: explainthiscast@gmail.com Facebook: https://www.facebook.com/explainthiscast Bluesky: ...