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Octopus vs Underwater Maze
2026/5/3
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Mark Rober is a former NASA engineer (Curiosity Rover) turned YouTuber (45M+ subs) building elaborate engineering inventions, glitter bombs, world's largest devices, and educational STEM content. manabi summarizes his videos into 1-minute readable notes.
Mark Rober worked at NASA's Jet Propulsion Laboratory for 9 years (including on the Curiosity Mars rover) before becoming a full-time YouTuber in 2014. His channel (45+ million subscribers) features elaborate engineering builds: glitter bombs targeting porch pirates, world's largest Nerf gun, $1 vs $5,000 lemonade tests, automatic strike bowling balls, and Rock-Paper-Scissors winning robots. He founded CrunchLabs (engineering toy subscription) and the #TeamSeas / #TeamTrees viral fundraising campaigns.
manabi aggregates Mark Rober video summaries for readers who want to preview his engineering experiments. The visual builds and reveal moments are best experienced in the original.