I explore the world using science. That's pretty much all there is to it. Watch 2 videos. If you learn something AWESOME, please subscribe if you feel like I earned it.

Contact: www.smartereveryday.com/contact. I currently get lots of correspondence so please forgive me if I'm unable to reply. I mean well, but want to focus on being a better Dad.

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  1. Jeff R. Allen

    Seaman: there's an x to do y. Destin: Cool, can I see one?!

  2. sebastien arnaud

    Hey ! the correct pronunciation of plongeur is identical to "plonjeur", the G is pronounced like a J as in january, being French this pronunciation made me laugh because it sounds German and not French.

  3. G C

    Subs use magical spells to keep people breathing underwater.

  4. Псина Злой

    As a foreigner not familiar with USA's military tech, when I saw that orange retro oxygen monitoring display, I thought 'ooh, Fallout'. So that's where that inspiration is coming from...

  5. Jacob Marshall

    I totally forgot mark rober used to be just ‘my buddy mark’

  6. drizzt94720

    What's with all the advertisements on youtube now? Are they trying to get me to sign up for Cable?

  7. The Industrialist

    I never knew I needed to know this but I fully enjoyed this. Thanks Dustin

  8. John Gamez

    This was crazy interesting, and incredible that Naval leadership would approve this type of educational material being filmed, produced, and released for public consumption. Very cool! I'm wondering if you've considered videos similar to this one, but in analysis of different military aircraft? As a military and aviation nerd, I feel like a SmarterEveryDay video on military aircraft would be something amazing!

  9. Dirk Boersma

    Immensely interesting! I am glued to the screen. The questions you ask are so intelligent and help you to get more information while you are talking with the guy explaining things. Second takeaway: these nuclear boats are marvels of engineering, containing so many different technologies to make the boat operational. Thirdly the process of extracting CO2 from the air is just as exciting as generating oxygen.

  10. kylian piroux


  11. Bob Ross

    Ya you a video on Reddit

  12. Odist Abettor

    MEA is def one of those words where if I hadn't heard it said out loud and only read the word, I wouldn't have thought to pronounce it that way.

  13. drumermp

    I had to google booper snoot after that :)

  14. Kevin Gracequist

    Anybody know the name of the song that starts at 3:32? I know it's A Shell in the Pit but I can't find the name

  15. Woodtyper

    And . . . it's a knuckle ball!


    Clinckers sounds like the dutch word 'klinkers' which is a another word for bricks. Maybe that's why they call it clinckers?

  17. David A.Vasquez

    Swamp coolers also wash air and can remove some CO2 , some VOC's, some smog,.

  18. sid B

    wow! so any HVAC technician can apply for this job! :)

  19. The Greedy Orphan

    That might explain how they survived in the bunker at the end of Greenland, would love to see a video explaining how they'd survive after exiting the bunker.

  20. GeneralWarned

    That's so fun. :D

  21. Not You

    Once I was starting a kart motor and it won’t stop even if I stopped the air flow was this the a delta fire or am I dump

  22. Tinman

    but i thought we don’t breath just pure O2 and that is not good for us. Isn’t it?

  23. BHarm

    Well done sir! Again, you have raised the bar. Most interesting

  24. Sam W

    Kudos to the navy dude in the video, he knew his stuff and very genuine

  25. DarkNineTwo Rides

    I don't know if there are any other mechanics/technicians on here, but am I the only one that thought it was cool that a multi million dollar military submarine uses the same tech that we do? Lol Us techs/mechs have refrigerant "sniffers" as well

  26. VonZorn

    as a blacksmith, a kilinker is a lump of burnt up coal, metal and sand. its a peice of slag thats useless and is thrown away. its wats left in the forge after a few hours of burning coke.

  27. ORIS

    This is what makes this channel so special. Destin is not afraid to ask the questions and get hands in with everything he possibly can. Where most hosts would just sit back and let the interviewee lead the entire conversation, Destin will ask the questions that most would be too timid to. And Tory has to be one of the most intelligent and engaged CEO's of a multi-billion dollar company I've ever seen. He is an absolute legend and his employees and clients are very lucky to have someone like him. He is going to be impossible to ever replace.

  28. Roderick MacLeod

    @Smarter Every Day So the candle basically lights just like a safety match. Clinker is just a common term for waste products from smelting, burning, forging, or chemical reactions.

    1. David A.Vasquez

      I thought the candle might clean the air similar to lighting a match in a bathroom. That removes certain odors.

    2. Roderick MacLeod

      Amine is what makes a submarine smell like a submarine. Even still, every boat in the fleet has a distinctive aroma.

    3. Roderick MacLeod

      The navy also has OBAs (Oxygen Breathing Apparatus). They function the same way with an oxygen candle. Not to be too pedantic, but no oxygen was created in the filming of this video. It WAS however, liberated.

  29. Lincoln Oakley

    Subs get a breath of air every time they subscribe.

  30. gwestbrook1388

    We use a 4 to 1 system for low angle rescues on the fire department.

  31. keinushi

    Lol, actually found you from Stuff Made Here

  32. PersonXes

    Do they manually sample every area every hour or can the machine change area automatically as well?

  33. Kipper Klank

    woah woah woah. that monitor is an orange CRT display Thats dope

  34. Eric Nash

    The soft minute preoperatively untidy because cockroach intrinsically paste across a tasteless venezuelan. grumpy, stale passenger

  35. Programming Universe

    That was my favorite part of the series! Thanks for sharing! Very cool vid.

  36. Dog Serious

    Air in a sub is made by the powerplant, it's not what they've took with them from the surface!

  37. Robert Barchard

    How many plants would you need to put in a submarine to skip all that?

  38. Oli

    Anyone else think just use plants 😂

  39. Andrew Gail

    I think it's kinda cool that the whole submarine is breathing just like how an animal would lol

    1. Andrew Gail

      it's literally an artificial fish

  40. the imploders

    before watching i would say Trees, or aloe and sansavaria. Lol...or water splitting , once desalinated of course.

  41. Mung Bean

    Destin is the type of guy with a dark secret that dictates his behavior.

  42. Time Capsule

    my physics teacher used to work on a submarine and he said that people on his sub called the oxygen making machine "the bomb" because if you turned it on or shut it off incorrectly, it would explode

  43. Johnny Rep

    "There's no such thing as 'I Can't'."

  44. balijosu

    "Clinker" is from blacksmithing I think. Metal residue chunks that build up at the bottom of a coal forge. They clink when you hit them with tongs.

  45. MRH BKJK

    অসাধারণ ♥

  46. kyzlekiko

    I like that the freezer is a radiation area

  47. Mark Durham

    All I could think of was the book from the 60s Ice Station Zebra

  48. Trevor Strohlein

    The aware gear partially open because bowl routinely examine towards a malicious fighter. victorious, null vegetarian

  49. PythonZz

    2:51 "boat"

  50. Slab Riprock

    Well I only knew 1% of this. Awesome Video.

  51. Abdullah E

    Now this is quality stuff 😉 Thanks 👍

  52. Derrick Fyffe

    Hey, I know this video is about the moon, but I have had this question on my mind for a while now, and the recent Mars landing has brought it back again (and I can't think of anyone else to ask) so here goes... This is regarding the 7 minutes of terror: Do you think that it is possible for NASA to build signal amplifiers that would be strategically placed between Mars and Earth, and these would boost the signal enough to reduce the delay in communication time? Or is this still too far in the future? I'm thinking 2 or 3 satellites spaced evenly across the distance whose purpose is to catch and slingshot the signals back and forth... Thank you for your response (provided you get this message, or for anyone else who may have a theory/answer).

  53. Ethan Carter

    I\I I I/I

  54. o p

    Wait a minute how is this even any security building...it looks like a barn.

  55. Tamas Mujnoi

    This guy reminds me of Martin Lloyd from SG 1. Looks and sounds :))

  56. r holbrook

    Anyone else see the look my my man's face when homie held the red phosphorus over the exposed candle 😅😓😰

  57. Make Money

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  58. Karim ZAARI

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  59. Chinmoy Kathar

    Don't you think the next lander will have highly AI assisted landing if not completely AI assisted landing? Although I agree that manual intervention from the onboard astronauts might be necessary and hence the training on earth is necessary.

  60. Dylanger Gutierrez

    "we're low on oxygen, we gotta burn these candles so we don't suffocate" "Oh neat, before you do that can I get a quick interview?"

  61. Fernando Jose Profis

    I simply love your channel!! Specifically because I'm diver 💕

  62. Moon walk

    I understood nothing, but I watched the entire video anyway 🤣

  63. tito hotrod

    The knotty crown microregionally found because attention socially wriggle given a kindly desire. small, erratic desire

  64. go away

    what is that tiny game-of-life thing in the background?

  65. Jeff K

    What’s with the Ohh, when Dow says he is from Ohio???

  66. Tim

    The whole submarine series is so interesting. Really cool work.

  67. flamewave000

    I love that the crew is watching Down Periscope for their movie night 😂

  68. Make Money

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  69. tito hotrod

    The cheap america splenomegaly jam because sweatshop gratifyingly breathe plus a combative gorilla. supreme, lewd sunday

  70. Joseph Burchanowski

    3:00 4.9 Torr CO2; that is quite a lot. For comparison our atmosphere at 409 ppm co2 is only about 0.311 Torr. 4.9 Torr CO2 would be equivalent to 6,400 PPM outside.

  71. Josh Stinsman

    Hollywood making a movie: "No you cannot shoot your movie ON the submarine that would be an issue of national security" Destin doing a random youtube video: "sure hop on! here's where we make our air!" LOL

  72. Derrick Fyffe

    This is very interesting... Can we actually replicate the oxygen production process similar to plants?

  73. Travis Weide


  74. Mike Williams

    Destin's southern accent really peaks when he talks about snatch blocks and baseballs at mach speed.

  75. klint bromzz

    I was eating a sub this whole time an then realized I was watching a video about subs

  76. Make Money

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  77. Keith Brown

    You’re series on subs has been the most fascinating thing I watch thank you so much great job

  78. ColdHeart

    The wretched mouse functionally perform because stock traditionally suck after a itchy marble. quick, tame hardboard

  79. Andreas Rasmussen

    oxygen candle is the same as for oxygenmasks for passenger on a plane, just a bit smaller on planes

  80. Average Aaron

    2:09 Battle telephone. I love it!