Mark Rober

Mark B. Rober is an American YouTuber, engineer and inventor. 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 one where he made a digital Halloween costume and one where a trap for package thieves that releases a fountain of ultra-fine glitter was constructed. Before YouTube, Rober was an engineer with NASA for 9 years where he spent seven of those years working on the Curiosity rover at NASA's Jet Propulsion Laboratory. He later worked for four years at Apple Inc. as a product designer in their Special Projects Group, where he authored patents involving virtual reality in self-driving cars. In October 2019, Rober and fellow YouTuber MrBeast launched the #teamtrees environmental fundraiser where they planted over 2 million trees.