The Story
Mars rover by day.
Glitter bomb by night.
On October 28, 2011, Mark Rober taped two iPads to his chest, filmed the camera feeds through a YouTube video, and walked out the door looking like you could see straight through his torso. He uploaded the Halloween costume clip. It got 1.5 million views in 24 hours. He was still a NASA engineer at the time.
That's the detail that unlocks Rober. Not the 77 million subscribers or the viral philanthropy campaigns - but that he was a working JPL engineer building hardware for the Mars Curiosity rover, simultaneously becoming one of the internet's most-watched science teachers, and did not appear to find this contradictory in the slightest. He spent seven of his nine NASA years working on Curiosity. Parts he designed are rolling around on Mars right now.
That's the cool thing about being an engineer. You can just will something into existence.
- Mark Rober
After leaving JPL, Rober went to Apple - four years in the Special Projects Group, where he authored patents for VR entertainment systems inside self-driving cars. Then he quit Apple entirely and went full-time on YouTube. In 2018, a package was stolen from his porch. He built a trap: glitter cannon, fart spray dispenser, hidden cameras. The video hit 25 million views in a single day. He had not been trying to go viral. He had been trying to catch a thief.
The pattern repeats. Rober doesn't manufacture spectacle - he engineers solutions to things that genuinely annoy him, and the solutions happen to be spectacular. The backyard squirrel obstacle course (114 million views) existed because squirrels were raiding his bird feeder. The phone scam operation he helped expose - which led to 15 senior arrests - started because elderly people he knew were getting defrauded. The $60 million free STEM curriculum he announced at TED 2026 exists because he thinks the way science is taught in most schools is broken.
His latest move - Class CrunchLabs - is the clearest signal yet of what he actually cares about. After two and a half years of development with a team of science teachers across the country, Rober released a fully free, state-standard-aligned STEM curriculum for grades 3-8, developed in partnership with the National Science Teaching Association. He then gave it away. In pilot programs, 95% of teachers said they'd adopt it as their full science curriculum. He spoke about it at TED 2026 in Vancouver. He is keynoting the NSTA National Conference on Science Education later this year.
