Mark Rober – Worlds Largest Elephant Toothpaste Experiment

Mark Rober (born March 11, 1980) is an American engineer, inventor and YouTube personality. He is known for his YouTube videos on popular science, do-it-yourself gadgets and creative ideas. Several of his videos have gone viral, including a digital Halloween costume[1] and a trap for package thieves that releases a fountain of ultra-fine glitter.[2] Prior to YouTube, Rober was an engineer with NASA where he spent seven years working on the Curiosity rover at NASA’s Jet Propulsion Laboratory.


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