Former NASA engineer. Current NOselr and friend of science.
Answers to some common questions:
1) I studied Mechanical Engineering in School. I did my undergrad at BYU and Masters at USC.
2) I worked for NASA JPL for 9 years, 7 of which were working on the Curiosity Rover (I made a video about it you should def totes watch cause it's probably my favorite of all my videos). I founded a company called Digital Dudz on my nights and weekends while working at NASA (also made some videos about that) and sold it to the guys who make Morphsuits in the UK. As part of the sale I quit my job at NASA and worked for them coming up with all their new costume ideas for 2 years. Recently, I was presented with an opportunity to return to my Engineering roots to come do some ideation type of work for a tech company near San Francisco.
3) Link to free and therefore substandard build plans for my custom workbench can be found below.

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  1. Shashank Ashar

    2:12- scammer: Why do I hear boss music?

  2. Randy Perkins

    Looks like Arby's is going down

  3. GoProJoe

    Wow, that guy has the most epic party tricks ever

  4. Sketched Chihuahua

    imagine breathing in sand instead of water

  5. Hi Welcome

    When you inhale helium , you sound very weird on 1:16

  6. Low Quality Creeper

    When you have nothing to do with toothpastes:

  7. Arthur Knight

    If you ever do a v3 of this, you should try and do it with paint, it will be much harder to clean up and they'll never forget it. 😂

  8. Anju Anil

    Apply some aerogel like vertasium

  9. Edgar Edgard

    now lets try bouncing a human on that kevlar baby from 50 ft high, see how far he goes

  10. Nic Sapak

    Hey babe I brought you some headphones Opens headphones Hello :) BOOOOOOOOOOMMMMMMM

  11. Richard mason

    Thank you for this video , I think more people should see this because "needing" meat as a protein has been a concept that has been driven by the meat industry, all of our lives we have been educated about human evolution , but yet Primates are vegetarian and we have known that our whole lives , these primates are healthy and stronger with only plant based diets. Just like milk - humans are the only species that continues to drink milk from other species and we know it causes inflammation

  12. 100 subs with no kontext?

    This should be called "ms paint pro"


    why are you not a teacher

  14. Faith H

    I think you could coat your hand in some sort of wax that repels water. My guess is that water only makes things wet because the water sticks to your skin (adhesion). And wax might make a good repellant because it can’t be saturated and the water doesn’t stick to it. Also I just want to say thank you for doing these classes because it really gives me something to look forward to during the week

  15. Andy Wu

    As soon as I watch the first 10 seconds I'm like Please... Don't... Tell... Me... You... Actually... Did... This...

  16. Bryce Lindberg

    to not get your hand wet try brushing it in nail polish


    Can you be my uncle

  18. JustCallMe Lee

    8:24 ha we get 5 months off school

  19. Hardaat Baath

    Mark: If you are a mammal, consider subscribing... My fish: Oh Naw....

  20. Yisrael Rothenstein


  21. Jonathan

    8:00 new meme

  22. Nkeiruka Joan Ekwealor

    The oil on your hands repels the water off of your hand and that's why the water drips off of your hand. Kind of like when you put oil and water in a cup they separate.

  23. Sizus _16

    The next disease will be worse than ebola 2020: arey you challangeing me

  24. shaunmilor

    you cheated again Mark Rober lol

  25. x Archangel x WR

    We do got this. Humanity is resilient as you said, and we will come back and be a better world as a whole. God willing

  26. Aung Khin Oo

    what if the package thief take the phones

  27. Michael Nielsen

    Soooooo... Why is the sky blue and not violet?

  28. Clovis B

    Marks the best

  29. Sam Luna

    I am in middle school so I hope he can be my science teacher during high school!!!!

  30. Adam Child

    In order for your hand not to be wet when you put your hand in water, you need to cover your hand with a hydrophobic substance. A hydrophobic substance is something that repels water and if you cover your hand with one it will keep your hand dry.

  31. Jacob Brännland

    Mark, can you make a video about induction?

  32. Kristine Lazar

    I like how they had JUST the right amount of orbeez to fill the pool

  33. PCH ActiveFloor

    NASA is sending 11 million people in mars for testing

  34. FBSB

    eyo we call those 200 philippine pesos, not 200 filipino dollars, and also 200 dollars in PHP is P1000.

  35. DCtv

    Who’s here after Dobriks video

  36. Team Aduna

    hug to hug

  37. Justin Wright

    lemma ask this: the point?

  38. Romero Munoz

    Read the bible....ur creation from science did not explode n appeared out nowhere...

  39. Alberto Chavez



    Well I think animals are animals and we are humans we have control over animals and if humans don’t consume animals the number of animals on the planet would just skyrocket so eating animals isn’t that bad just don’t eat it to much

  41. Crown Defender

    You killed the fish!

  42. Romero Munoz

    The Sky is Blue ..its like looking into a swimming pool...yes water above dome...rainbow arches .Dome firement.....rainbow follows arche dome

  43. Robloxian Jotaro

    Lemon or lime?

  44. Zo775

    The worlds smartest people are lazy people

  45. Zo775

    "The next disease will be worse than Ebola" Coronavirus: Oh my god, why are you always right about the world, can you just get something wrong

  46. Robloxian Jotaro

    Wait I’ve been to pikes peak

  47. It'sCyan

    You can tell Mark’s gonna make a fine teacher by the way he keeps the cursor on the screen while the video plays

  48. Tricia Bell-Champion

    As a parent, I can't THANK YOU enough for this video.

  49. Beans ,

    I wanna make something like this but with nails

  50. skippymagrue

    This makes the scene from Spirited Away with the paper chasing the dragon more realistic.

  51. Georg Skeide

    16 minute video 16 seconds of what i came for

  52. Zach

    Hey Mark, i just wanted to pop in to tell you what i fantastic person you are. you are so passionate about learning and the education of our future generation, i really gives me hope for the human race. if you can reach even one person, that makes a difference! You get to entertain / educate 11+ million people. That's a BIG deal, keep up the great content and most importantly....THANK YOU for helping everyone's brains stay active during this time of crises and making it fun (as always). Pretty sure i heard you were trying to get your teaching credentials as well, so let me wish you luck on your current and all future endeavors. thank you again for all that you do for humanity!

  53. Cayden Christensen

    My answer is that you pour lycopodium powder in with the water and dip your hand in. The powder will form a barrier between the water and your hand. Your hand will come out dry with some lycopodium powder still on it.

  54. Zo775

    this video makes me feel even happier to be a vegetarian

  55. sovidjia hangsoth

    If Micheal reeves was with William and Mark

  56. Daniel Falk

    But you still have to make the snowballs 🤔

  57. Derp Animations

    Question: How can you dip your hand in water without getting wet? Answer: Dip your hand in a hydrophobic substance

  58. Cj S

    Mark: Former nasa ininteated not teacher

  59. Gabriel Martin

    I got glowing hands 2 days ago but what's weird was that I didn't use a powder For some reason I was playing with slime glow in the dark and all of a sudden it turned my hands green

  60. I am Potassium

    Put your hand in a plastic container and push your hand on the container and it won’t get wet because it doesn’t go underwater

  61. Mallika Morin

    Why are people color blind? Are microwave safe healthwise?

  62. Super gamer 555555555

    Imagine having MrBeast as your dad and your Uncle is Mark Rober....

  63. How _To

    Hi Mark, I am a student based in Dubai and I am inspired by you’re video and then I find out you worked at NASA. MY LIFELONG GOAL, well technically. I want to work at JPL but anyways can you make a video about you’re experience at NASA

  64. It'sCyan

    The blacklight control would’ve gone way differently if you’d done this in, say, a college dorm.

  65. Q-monster 647


  66. Frosty Pal

    The thumbnail... One big jarate

  67. Derp Animations


  68. XVLComP

    social distancing actually encourages psychiatric problems

  69. Rainbow Dog


  70. Aravind madhu soodana panicker

    Mark rober sir can you buy me a iphone

  71. Lightning Emperor 07

    Mark Solves road rage problems

  72. TheTitchUK

    When life gives you lemons, you make a massive battery

  73. Vishal p

    Major respect Mark Rober.

  74. Tajwear Taharim

    i swear i will leave a like, EY U SAID U SWEAR SO LIKE OR IMA PEE IN UR POOL >:)

  75. Mega Saladmence

    I hate to be that guy, but they are swimming in animal bones and skins, I can't help but think this throughout the video.

  76. beth osborne


  77. Kyan James

    you should have made it contact the police

  78. huang debbie

    Put some oil on your hand

  79. Tajwear Taharim


  80. Nathan Adler

    Answer tot he question: wear a hydrophobic coating to prevent the water from sticking to your skin.

  81. Yu Liew

    Usa: cards weakness are water In mother russia cards are not weak to water, water weak to card

  82. Light Shadow

    he is the undercover of joker

  83. F.F .C.B.E

    The teacher looks like Seth Everman

  84. jeffero10

    Yo, mark rober can u like move to maryland and work at south river high so you can teach me 11th grade ap physics. :)

  85. Arthur Oum


  86. Used_Napkin

    you inspire me

  87. whewitt56

    I subscribed

  88. Lijo Thomas

    I guess if impossible burgers match their pricing to the affordable chains, a lot of people will be eating plant based stuff

  89. jennyg445

    Dear mark rober why does the Diet Coke float but normal coke sinks.

  90. Warrix GT

    *This guy is smart, He should work for NASA.*

  91. Celina Brost

    U murder 😫👈😠 👆 😡

    1. Celina Brost

      And also don't call his channel junk

  92. whewitt56

    omg hilarious

  93. Aesoph Carl


  94. Be Kind

    That tower is freaking me out

  95. Tim Hulleman

    When live gives you lemons

  96. jennyg445

    Mark rober making duct tape kelts School making board children

  97. SansyMansy 2.0

    poor oxygen :(

  98. andres rueda

    The dislike are from thieves

  99. Green_Eyed Pirate


  100. Jim Newkirk

    Love you vids dude