ELI5 Explain Like I'm 5: Bite sized answers to stuff you should know about - in a mini podcast

How common is myopia around the world? Is it caused by genetics or lifestyle? How has myopia evolved with human activities? In aAmerican drug stores you often see a wide variety of reading glasses. Why are there no pre made options for myopia or near sighted people?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: notofyourworld, forams__galorams, cultish_alibi, pearlsb4pigs, explosivelydehiscent, norrisn and queltis6000

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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Why can't we just throw our trash into volcanoes to incinerate it? Why do some volcanoes erupt explosively while others have gentle lava flows? Why is Yellowstone National Park considered a super volcano? Which volcano created the loudest sound ever recorded? Can we use volcanos as energy sources?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: notofyourworld, forams__galorams, cultish_alibi, pearlsb4pigs, explosivelydehiscent, norrisn and queltis6000

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

https://www.twitter.com/eli5ThePodcast/

or send us an e-mail:

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How are lab grown diamonds made? Are they exactly the same? Why do they have different prices and resale values? Which is more environmentally friendly? How have cultural and social attitudes evolved?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: pahpichulo, greenstrong, h0ly_s0x, twin_spoons and krimmson_

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

https://www.twitter.com/eli5ThePodcast/

or send us an e-mail:

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How do MRIs work? Why are they so expensive? Why are they so noisy? Are MRIs related to other scans like x-rays, CT scans and PET scans? Why aren’t full body MRIs more part of routine checkups? Why are they so expensive? If there is iron in our blood, is this affected by the magnetic fields in an MRI? Why was there controversy with the nobel prize awarded for MRI technology?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: danielaumbrella, superdad0206, duferino, 8daysuntiltheweekend, war-ear, glittering-ocean1, let_me-out, one2manythrees and truguido

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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Why do military planes like the Hercules C-130 and Airbus A400M military transport planes use propellers instead of jet engines? What makes them more versatile for shorter runways? Why is a turboprop engine not the same as regular piston propeller engines? Explain the difference between a turbojet, turbofan and turboprop.

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: elena1995x, dirschau, airbornerodent, frat_guy_pa, arztnur, noxious89123 and kaiisim

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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How did we even measure it if it’s so fast? Why can’t anything go faster than the speed of light? If I were to take a really really really (light years) long stick and push something on the end of it, would it happen “instantly”? What are some of the loopholes that would allow us to theoretically exceed the speed of light?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: sometimesokayideas, diogeneskuon, maadmaxx, acrazygerman and tofuattack, thrasher1236969 and javanator999

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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or send us an e-mail:

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How are QR Codes better than regular barcodes? How do they work? The fourth corner square is kinda important - what kind of processing is going on for a QR code to be decoded? Why is error correction so important in QR codes?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: puppett_master, berael, middlefingerin, jagedmetalos, superpansy, simbonegtp and jcdu

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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What exactly is a Dyson Sphere? What materials would be required? What is a Dyson Swarm and a Dyson Bubble? Could any other civilizations have built a dyson sphere already?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: apprehensivemedia999, loki-l, kriss3d and joushmark

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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Are the 100+ year old skyscrapers still safe? How do skyscrapers get built straight up without any leaning or imperfections or off angle walls? How does the concrete get poured so perfectly? How have designs changed over the years? What NYC had a 6% chance of falling in any given year?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: troyisawinner, justasking1t, johnproof, monkshabit, torostein, hopefulmonstr, hippityhoppityboop, flannelheart and krisalyssa

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

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How did Shigeru Miyamoto come up with Mario, and how has this character evolved over the years? How is it that the first Mario Bros. game was about 32kb, but a JPEG of the game is over 300kbs in 2023? What made the game mechanics so special? Why is the first level of Super Mario still studied today? Who is the real-life Mario that the character is named after?

... we explain like I'm five

Thank you to the r/explainlikeimfive community and in particular the following users whose questions and comments formed the basis of this discussion: mrblackops16, sneaky_gopher, displacedpie, grumblyoldman, summerandtinkles and mrdrofficer

To the ELI5 community that has supported us so far, thanks for all your feedback and comments. Join us on Twitter:

https://www.twitter.com/eli5ThePodcast/

or send us an e-mail:

[email protected]