World's Tallest Elephant Toothpaste Volcano (I FINALLY DID IT!!)
When life gives you lemons... build a 5 ton flask and blast them to space.
Use promo code ROBER to set up your DraftKings fantasy football team with your crew and get a shot at some great prizes! Check it out here:

Thanks to the good people of Gridley, CA and everyone else who helped out here.

Science Bob has a new page about making Elephant's Toothpaste on your own-

Shoutout to the one and only authentic Orbeez for providing the Orbeez.


If you want to learn the process whereby you can make cool stuff too, join in my Creative Engineering class!!

This class is a hands-on, 30-day learning experience that will teach you how to use engineering and science to bring your creative ideas to life.

During this class, I'm going to share with you my entire creative engineering process from start to finish. You're going to follow along with me as I fully design and engineer 3 brand new builds from scratch... from how I come up with the idea, all the way through bringing the final builds to life.

The best part is, over the month, you'll follow along with me and my process, side by side, and you will leave the class with 3 original, creative builds of your own.

This is the class I wish I had when I was starting out. It's designed to take your skills to make cool stuff to the next level, whether you're a beginner or a more experienced maker/engineer.

See you in class!


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  • Mark Rober
    Mark Rober

    When life gives you lemons... build a 5 ton flask and blast them to space.

    • Reverse Alchemist
      Reverse Alchemist

      Comment before 500 replies tickets 🎟

    • Anime boi
      Anime boi


    • izzy

      Your devils toothpaste recipe is likly very similar to hydrogen peroxide based rocket fuel but with soap in it

    • Uhhh

      Hi mark!

    • Solarbonite

      I don't want your lemons! I'm going to instruct my engineers to make a combustible lemon to BURN YOUR HOUSE DOWN! With the lemons. This is Cave Johnson, out.

  • Austin Wang
    Austin Wang

    Wish I could be in your video

  • iLAG

    Aye!! Let’s go!! Leth’s intro got put in



  • Leg Cramps
    Leg Cramps

    next world record: making a life size active volcano filled with toothpaste

  • jayden piakura-maoate
    jayden piakura-maoate

    I love watching this guy. :)

  • Top

    That ending monologue gave me chills and really inspired me. 💖 This whole video was amazing, those people from the community are so amazing, the science behind everything is so incredible, and the results, and not to mention cinematography, is so breathtaking. Wow. Love love loved the whole video beyond words

  • Anhadroop Singh
    Anhadroop Singh

    7:35 checkmate flat earthers😎

  • dounut

    You should make a watermelon cuter , I mean like it's kinda useless but who doesn't like a tube of watermelon. Like a hing or Sumthing to move the plating to cut the watermelon cilinder.

  • Pablo R
    Pablo R

    I don't understand how these kids barely react to meeting such a famous youtuber, like if I met Mark Rober (I'm not even that big of a fan) I would just break into tears and hug him

  • Mita Januari
    Mita Januari


  • RALPH Grefaldeo
    RALPH Grefaldeo

    With laminar flow you can make a water bubble just by re directing the flow.... Imagine creating a giant one where a human can fit. Like if you want to see that

  • Fraser MItchell
    Fraser MItchell

    i love your video so much

  • Lloyd Anthony Trigue
    Lloyd Anthony Trigue

    Your vids are so awesome😜😜😜

  • Evander

    I wish I could have something like this

  • Nathan Snyder
    Nathan Snyder

    Mark you absolute beauty! What a video!

  • Lincoln Ochap
    Lincoln Ochap


  • Adam Olmos
    Adam Olmos

    Wow cool I wish that was me but it will never be me 🥲🥲🥲🥲

  • Ignited_DragonYT

    This video made me smile.

  • Simon Calabuig
    Simon Calabuig

    *pours water* "only the finest"😆😆😆

  • Still loading
    Still loading

    This was the most wholesome video ever...

  • shadow

    10:02 looks like lava

  • Boi 5219
    Boi 5219

    Dude you stole this video from mark rober

  • Jlyn Clark
    Jlyn Clark

    I love your videos ❤️

  • Chris Pederson
    Chris Pederson

    If he don't have kids choice award... he needs one !

  • Cristina Azizeh
    Cristina Azizeh

    Are you the real Mr. beast

  • Dylan Schmitz
    Dylan Schmitz

    If he ever does this again, he should put a GoPro in the flask that way it gets launched into the air.

    • lamename

      the gopro will burn

  • nelson home
    nelson home

    Please do more if they don't mind

  • Jey M
    Jey M

    Insane amount of wastage

  • Blayton Winkler
    Blayton Winkler

    You did it again mark nice love you and your video

  • Sloth Peak
    Sloth Peak

    Mark: *calling out everyone one* This is a joke btw so don't take it seriously.

  • Sophia S.
    Sophia S.

    Hey! Can you make a video on the science of running? Like the proper technnique to it and all.

  • Rookie gamer :D
    Rookie gamer :D

    12:51 this is my kingdome come this is my kingdome come

  • Sage Morrison
    Sage Morrison

    If anything is worth the carbon footprint of a private jet, it's stuff like this.

  • Michelle Randolph
    Michelle Randolph

    Mrbeast Sent me here

  • Simply Elie
    Simply Elie

    Is it safe to eat elephants toothPaste?

  • kiler- boy
    kiler- boy


  • Orpheus90

    Mark, time for you to think about becoming a legit film producer. Whatever it takes, you got it, babe.

  • Petras Jonas
    Petras Jonas

    1 million idiots detected

    • lamename


  • ck gamer PA
    ck gamer PA

    You reckon mark can make ODM gear from Aot? That would be awesome.

  • Thomas Tevis
    Thomas Tevis

    Awesome videos sorry I’m soo late

  • MeloKing

    I swear mark is the best human ever

  • What’dUp

    Is it bad that I kinda wish I could sit on top of the flask and get launched into the air then activate a flight suit and fly down with sunglasses on

    • lamename

      goodluck because ur bottom is a goner

  • Dalek Caan
    Dalek Caan

    Shouldve got the slo mo guys to record some slomo

  • Flynn Edwards
    Flynn Edwards

    what is the biuld montage song?

  • shark puppet
    shark puppet

    Niceeeee and 13:58 is so cool

  • Joe D'Abate
    Joe D'Abate

    My teacher showed this for our school yesterday

    • Joe D'Abate
      Joe D'Abate

      Why still watching

  • JackE Boy Gaming
    JackE Boy Gaming

    Mark your making me jealous

  • WoomyDreemurr

    Mark, you should build a splattershot! I know you did your paint guns but the splattershot could be version 2.0!

  • nathan vandenhaak
    nathan vandenhaak

    how do you even clean that up?!!

  • Olivia Tabor
    Olivia Tabor

    Such a sweet video.

  • Inventorkid123

    That looks like soo much fun it’s sad for me I live in NSW in Australia and I’m in lockdown😭

  • Bentley EPic
    Bentley EPic

    looks like a retro future space capsule, noice. now go make another breakthrough or im going to swallow a tub of jellow

  • Cubick

    Mark being chased by kids with paint has to be the cutest thing EVER

  • Brad Fyfe
    Brad Fyfe

    These always make me cry. Thank you! I would love for you to get in contact with my wife and partner up with her and her non profit here in LA (Our Village Inc) that specializes in working with teens and young adults with Autism in a social skills environment.

  • Cubick

    This is insane! Amazing work Mark

  • Time To Draw!
    Time To Draw!


  • Imad Eddine Sharaf Eddine
    Imad Eddine Sharaf Eddine

    Mark is the only person on the planet who would do a project this big and would only post a single video about it. Truely wholesome

  • Hyena simp
    Hyena simp

    Bro litterally you and mr beast are the nicest people

  • Erica Ghelfi
    Erica Ghelfi

    Mark I got a dom bot from kiwi co love ur vids

  • Vij Etc
    Vij Etc

    As a FIshows influencer, do you condone the use of huge amounts of chemicals, even safe, for such recreational purposes? One offs are okay, I guess. But I would expect many will try these at home, even if not in such a scale.

  • Loopit _ 3
    Loopit _ 3

    1:30 can someone tell me pls what's this song called?

  • Poobaby

    10:10 the hot cheeto girls fingers every day in class

  • Thu Kologranic
    Thu Kologranic

    Offcrarae that wil by 90,0000 dollers

  • Matt Dill
    Matt Dill

    Repeat improvements are cool and as always it was entertaining but looking forward to something more new that gets back to the engineering/science stuff. Maybe make a video with Scott Manley - that would be awesome!

  • Eduardo Sanchez
    Eduardo Sanchez

    Que bonito

  • Pedro Rodrigues Alves
    Pedro Rodrigues Alves

    O Ijá

  • Quinn Fruge
    Quinn Fruge

    I like mark but I didn’t like that shot he took at jameis and the saints lmao

  • Carla Riddle
    Carla Riddle

    Uncle points +1 456 XD

  • Science D
    Science D

    Can you please make a video about E=mc2

  • Maisie Hickerson
    Maisie Hickerson


  • Fathersans

    Did I just saw kid fall off the slide

  • Kıvanç Tok
    Kıvanç Tok


  • robloxRulkser


  • Serena Centeno
    Serena Centeno


  • MrMan742

    Me when your mom

  • NotNiZx

    Tet I'm wondering how you clean it

  • Natalie Thompson
    Natalie Thompson

    This looks amazing I'm so happy you do this is adorable we need more ppl like you so fun and smart its amazing i love this c:

  • blacksmith67

    How are there 12K downvotes on this video? Are there that many mean spirited porch pirates?!

  • Brandon Neice
    Brandon Neice

    Mark Rober must be the coolest FIshowsr ever!!!

  • 9P Glizzy
    9P Glizzy

    Mix the races in your family gens they all white

  • Michael Haburay
    Michael Haburay


  • BlueRose and Pear
    BlueRose and Pear

    The child labour part is very wholesome 😌

  • Yurex

    Respect to the drone pilot that’s some of the most amazing and skilled drone shots ever


    12 minutes and 51 seconds in to the video we finaly see the actual purpose of the video after some boring stuff

  • Efe Degirmenci
    Efe Degirmenci


  • YF21_Septic

    I’m gonna go on a limb and say that it went pretty high

  • ROMULOSimo Salmo
    ROMULOSimo Salmo

    So nice

  • Rocco Clipz
    Rocco Clipz

    Do another collaboration with Mr Beast

  • Ath3n■¡xo

    Does blinking make a sound?

  • Gunkfunkulous Munktrunkulous v.2
    Gunkfunkulous Munktrunkulous v.2

    10:23 My people need me

  • SymbolicDeathwish

    So fun fact, Orbeez take about 7-9 years to break down in the environment. I really hope these are disposed of properly.

  • Aaron Sams
    Aaron Sams

    Mark is setting of elephant toothpaste 50 feet in the sky and I’m still trying to make mine go 5 feet in the air

  • Tenzing Chewang
    Tenzing Chewang

    *Party pool smells like pool* Mark: 🙄😶 (doesn't swim)

  • cile feral
    cile feral

    It looks like the poocano from jackass

  • Mango Man02
    Mango Man02

    sometime it's fun to watch people do large build !

  • ShadowClaw

    This is soooo cool!!!

  • Mandala 123b
    Mandala 123b


  • Suprema Azurea
    Suprema Azurea

    Just wondering why the title only included himself “I FINALLY DID IT” instead of “WE FINALLY DID IT” when others worked for it aswell.

  • Marwan Abudhaim
    Marwan Abudhaim

    20% of the earth now is devil/ elephant toothpaste by Mark rober