Mark Rober Interview Highlights: How He Makes Science Go Viral

Mark Rober’s videos often run 15 to 30 minutes, long by YouTube standards, and they’re about things many people gave up on in school: air pressure, terminal velocity, the scientific method. They regularly draw tens of millions of viewers. His own explanation, given in talks and podcasts, is unusually specific.

This post is for creators who want viewers to stay until the end, for marketers curious how a science channel sold out months of inventory in under a week, and for fans. It covers his start, his story method, what he says works on YouTube, his advice, CrunchLabs, and his projects as of October 2026.

Who is Mark Rober?

Mark Rober is an American engineer and YouTuber who spent nine years at NASA’s Jet Propulsion Laboratory, seven of them on the Curiosity Mars rover, before building one of YouTube’s biggest science channels and the kids’ engineering company CrunchLabs.

His videos mix big builds, pranks and experiments: squirrel obstacle courses, glitter-bomb packages for porch thieves, a record-setting elephant toothpaste volcano. He has co-led three large fundraisers with MrBeast, guest-hosted Jimmy Kimmel Live in July 2022, and since 2025 has built a slate of shows on Netflix.

How did Mark Rober get started?

“I started with just me and a tripod for 10 years, and I didn’t quit my job at Apple until I had 10 million subscribers … I’ve been on the side of doing all the things myself.”

— Mark Rober at Bloomberg Screentime, as quoted by What’s on Netflix, October 2026

Rober joined NASA’s Jet Propulsion Laboratory in 2004, after graduating from Brigham Young University. He told Adam Grant he was responsible for the jet pack that lowered Curiosity onto Mars, then for top-deck hardware that receives the rover’s soil samples.

YouTube started as a side project. In October 2011 he posted a Halloween costume that used two iPads to make it look as if there was a hole through his torso. It drew 1.5 million views in a day, according to Wikipedia, and became a costume company, Digital Dudz, which he sold in 2013. Fast Company reports that he left NASA in 2012, spent about five years at Apple working on virtual reality for autonomous vehicles, and was earning more from YouTube than from Apple by the time he quit.

How does Mark Rober turn science into stories people finish?

“What I’ve learned is I can’t teach you if I don’t have your attention. But if I can get your attention with something remarkable, well, now I suddenly have something to attach the learning to. … I like to call this style of teaching ‘hiding the vegetables.’”

— Mark Rober, TED2026 talk, April 2026

Rober describes himself as a storyteller first. He told Fast Company in 2022 that people assume building is his strength but that his real skill is storytelling, and he told Adam Grant the same in 2024. A video about the scientific method is boring, he said at TED; a video about a 15-ton Jell-O pool you can belly flop onto, which sneaks in all six steps, isn’t.

“People know the difference between steak and popcorn, right? … What I try and deliver is steak. And people remember that. … And part of making it nourishing is storytelling. And it’s hard to tell a full story in one to two minutes.”

— Mark Rober, ReThinking with Adam Grant, December 2024

That’s his case for long videos: a story needs room. At Stanford in May 2025 he boiled his approach down to three keys, according to The Stanford Daily: evoke a visceral reaction rather than reciting every statistic, pack the video with value, and be authentic. His squirrel maze videos, he said, condensed 500 hours of footage into 15 minutes.

For creators, the practical version is to decide what the viewer should feel before you decide what they should learn.

How does Mark Rober decide what to make next?

“I’ve never really sat down and had a brainstorm. … So many of the videos just come from my daily lived life”

— Mark Rober, ReThinking with Adam Grant, December 2024

His best-known ideas started as annoyances. Squirrels kept raiding his bird feeder, so he built them an eight-part obstacle course. Someone stole a package from his porch, so he spent a year on what he called the world’s least boring microcontroller tutorial: a glitter bomb disguised as a parcel. He told Fast Company he knows an idea will excite his audience because it still excites him.

His filter is novelty: he told Grant he wants viewers never to have seen anything like the video before. Keep a list of real problems you’d like to solve, and ask which would be remarkable to watch solved.

How does Mark Rober make a video?

“Technically, I could make three videos a month … but for me it’s always been really important keeping it special and small and something I’m stoked about. Because at some point, if you scale up, you’re no longer an engineer doing cool builds. You’re a manager.”

— Mark Rober, Fast Company, August 2022

Rober works slowly by YouTube standards. In his April 2026 TED talk he said he’d uploaded a free video once a month for 15 years. In his 2018 TEDx talk he said a typical build took two to three months, and an automatic bullseye dartboard took three years. Fast Company reported that his more ambitious videos often need six-figure budgets.

“I still write every single one of my videos and it’s a laborious, time consuming process that uses a lot of my brain power”

— Mark Rober, ReThinking with Adam Grant, December 2024

The team has grown around him: he told Grant in December 2024 that CrunchLabs had about 80 employees. The transferable part isn’t the budget. It’s protecting the work that makes a video yours, for him the writing and the engineering, and delegating the rest.

What does Mark Rober say works on YouTube now?

“To make a video go viral, you just have to have a visceral reaction, and generally that visceral reaction comes a lot from novelty. It has to make you feel something. … No one shares a video they didn’t finish watching.”

— Mark Rober, ReThinking with Adam Grant, December 2024

He listed amazement and empowerment among the feelings that make people share, and noted that anger is a trick being used a lot today.

The opening matters more on YouTube than elsewhere. Asked why he recorded a separate intro before posting his MIT commencement speech, he said YouTube viewers expect more at the start of a video than a live audience does:

“You gotta hook ’em. You gotta tell ’em like why it’s worth staying before you just get into a boring speech.”

— Mark Rober, ReThinking with Adam Grant, December 2024

At Bloomberg Screentime in October 2026, he added that polished network-style shows don’t get views on YouTube because people want what feels real, which is why his Netflix show breaks the fourth wall more. The working rule: promise something new in the opening, and pay it off at the end.

What is Mark Rober’s Super Mario Effect?

“This is what I call the Super Mario Effect: focusing on the princess and not the pits to stick with a task and to learn more.”

— Mark Rober, TEDxPenn talk, April 2018

The Super Mario Effect is Rober’s name for the idea that people learn more when failure carries no penalty. In that talk he described an experiment in which about 50,000 viewers tried a coding puzzle, and some were randomly told they’d lost five of their 200 points each time they failed. Those penalized succeeded about 52% of the time. The rest succeeded 68% of the time and made nearly two and a half times as many attempts.

At MIT’s 2023 commencement he told graduates to frame their failures as they would in a video game, MIT News reported, and in September 2026 he told Scary Mommy he wants kids to learn that failing is part of the process. For creators: treat a video that flops as information about the level, not a verdict on you.

What mistakes does Mark Rober say he made?

The mistake he has addressed most publicly came with his first glitter-bomb video in December 2018. He had offered to pay people willing to leave a decoy package on their porch, and a friend of a friend volunteered. After the video went viral, he learned that two of the “thieves” filmed there were the helper’s acquaintances, according to Tubefilter. He cut the footage, re-uploaded the video and apologized:

“I’m really sorry about this. … Ultimately, I am responsible for the content that goes on my channel and I should have done more here.”

— Mark Rober, statement on Twitter, as quoted by Tubefilter, December 2018

He kept making the series; by his account to Adam Grant, later versions helped shut down scam call centers in India. He’s candid about his early work, too, calling his first videos cringey. If you film strangers, verify what you didn’t shoot yourself, and when something slips through, say so plainly.

How does Mark Rober think about trust and authenticity?

“Authenticity is the currency of YouTube. The relationship with the audience is different and they want real people, and they want just people being who they are. Like, you can fake it for a little bit, but you can’t keep that up for years and years”

— Mark Rober, ReThinking with Adam Grant, December 2024

His model depends on parents trusting him; he told Scary Mommy his team never talks down to kids. Testing claims on camera brings scrutiny, too. In March 2025 he published “Can You Fool a Self Driving Car?”, in which his Tesla Model Y on Autopilot drove through a foam wall printed to look like the road ahead while a lidar-equipped Lexus stopped, as Fast Company described it. The video set off a heated debate, and some Tesla supporters argued he should have tested the company’s Full Self-Driving software instead, Futurism reported. If you test products, expect your method to be examined as closely as your result. For another creator who reviews products, see our Marques Brownlee interview.

What advice does Mark Rober give new creators?

“So my advice is like, do 50 videos and don’t expect anybody to see any of them. You need to have intrinsic reasons for doing it, besides being rich and famous, because it’s a lottery and it’s really, really hard to do, especially now, but it’s possible.”

— Mark Rober, ReThinking with Adam Grant, December 2024

He told Grant there are many good reasons to start a channel and two bad ones: getting rich and getting famous. When he started in 2011, he said, nobody knew you could make money from these platforms; he did it because he loved sharing ideas. Fifty is useful because it’s concrete: it gets you past the early videos you’ll later wince at before you judge the results.

What does Mark Rober say about brands and building CrunchLabs?

When Jimmy Kimmel urged him to sell a product, Rober told Fast Company, his first answer was the one he gave everyone who suggested books, tours or podcasts:

“And it always comes down to: so you can make more money. But, like, I have enough money.”

— Mark Rober, Fast Company, August 2022

What won him over was a product that complemented the videos: the Build Box, a monthly engineering kit for ages 8 to 12 that launched in summer 2022, each box linking to an exclusive video. He funded it himself, and according to his chief of operations it sold out five months’ worth of inventory in under a week, Fast Company reported. CrunchLabs has since added the Hack Pack, the Creative Kit and, by September 2026, a line of toys in stores, Scary Mommy reported. In October 2026 he called Netflix’s effect on sales meaningful.

His biggest collaborations have been causes. With MrBeast he launched Team Trees in 2019 and Team Seas in 2021, which raised $20 million and $30 million and, Fast Company reported, each hit its goal in about two months. Team Water raised more than $40 million for WaterAid in August 2025, TheWrap reported. Compare our MrBeast interview.

For brands, the lesson is that the strongest creator businesses extend the content rather than interrupt it. Before a deal, our guide to vetting YouTube creators covers what to check, and our guide to disclosing sponsorships covers what creators owe viewers.

What is Mark Rober working on now?

“At my core, I am a YouTuber and always will be, and we have some very big projects with YouTube and some really banger videos coming. It’s very much a ‘yes-and’ situation—Crunch Labs is becoming a multi-platform brand.”

— Mark Rober at Bloomberg Screentime, as quoted by What’s on Netflix, October 2026

As of October 2026, his biggest project is Class CrunchLabs, a free science curriculum for grades 3 to 8 that he announced at TED2026 in April. He said a team of about 50 people, including experienced science teachers, had spent two and a half years on it, that it would cost $60 million to make, and that every lesson, teacher training and demo would be free to teachers forever. Some lessons were available at launch and the rest will follow over four years, he said, calling it the most important thing he’ll do in his life.

On Netflix, his competition series SCHOOLED! turns a real school into an engineering playground with Rober as principal, and 14 contestants aged 9 to 17 compete for half a million dollars for college and an apprenticeship at CrunchLabs. As of early October 2026 it was scheduled for early 2027, What’s on Netflix reported. It follows his Netflix titles Mark Rober’s CrunchLabs, Elmo and Mark Rober’s Merry Giftmas, and Camp CrunchLabs.

What creators can learn from Mark Rober

Sources

• My $60 million science experiment, TED2026, April 2026
• How Mark Rober hides “science vegetables” in viral videos, ReThinking with Adam Grant, December 2024
• The Super Mario Effect: tricking your brain into learning more, TEDxPenn, April 2018
• How Mark Rober became the Willy Wonka of engineering, Fast Company, August 2022
• Mark Rober Talks New Netflix Series ‘SCHOOLED!’ and Why He Partnered with the Streamer, What’s on Netflix, October 2026
• YouTuber and former NASA engineer Mark Rober draws full crowd, speaks to scientific storytelling, The Stanford Daily, May 2025
• Yes, Parents: Mark Rober Really Is The Nicest Guy On YouTube, Scary Mommy, September 2026
• Mark Rober tells MIT graduates to throw themselves into the unknown, MIT News, June 2023
• YouTube Science Star Mark Rober Apologizes After Unwittingly Including Fake Footage In Viral Glitter Bomb Video, Tubefilter, December 2018
• Tesla’s self-driving capabilities are now a Looney Tunes cartoon joke, Fast Company, March 2025
• Someone Else Tested Whether a Tesla Will Really Crash Into a Wall Painted Like a Road, Futurism via Yahoo Tech, March 2025
• MrBeast and Mark Rober Raise Over $40 Million for Clean Water Push, TheWrap, September 2025
• Mark Rober, Wikipedia, October 2026
• Mark Rober’s YouTube channel, YouTube, October 2026

What to do next

If you’re a creator, pick one problem from your own life and outline it as a story, with a hook, obstacles and a payoff, before you build or film anything. For another science communicator’s view, read our Hank Green interview.

If you’re a brand looking for creators whose audiences stay, browse our creator lists, and read how we evaluate creators before you build a shortlist.