Mark Rober
Former NASA Engineer and Engineering Entertainment YouTuber
Mark Rober is an engineer who worked at NASA's Jet Propulsion Laboratory for nine years, including on the Curiosity Mars rover mission, before leaving to pursue content creation full-time. He launched his YouTube channel in 2011 and developed a format combining large-scale engineering projects with science education. His channel has grown to over 60 million subscribers. He founded CrunchLabs, a subscription engineering kit company for children, in 2022.
His most viewed series, the Glitter Bomb videos, depicted devices designed to spray package thieves with glitter and fart spray while recording their reactions. The series became a notable controversy when it emerged that portions of the footage in the first video were staged. Rober acknowledged this publicly and removed the original video, stating that some participants were acquaintances of a friend rather than actual thieves. He re-edited and re-released the video and continued the series with subsequent installments. The incident prompted broader discussion about staged content practices in entertainment YouTube, particularly in content that presents itself as documentary-style.
Rober's other projects cover a range of engineering demonstrations, including squirrel obstacle courses, large-scale ball pits, and swimming pool demonstrations of non-Newtonian fluid properties. These videos use spectacle as a vehicle for explaining physics and engineering concepts and have been widely cited as effective STEM engagement tools. His engineering credentials give the explanations credibility, and his access to manufacturing resources allows production at scales unavailable to most individual creators.
CrunchLabs generates revenue through subscription sales and has been marketed prominently through his channel. He has been transparent about owning the company he promotes. His annual #TeamTrees and #TeamSeas fundraising campaigns, conducted with other YouTube creators, raised substantial money for environmental organizations, demonstrating his ability to mobilize his audience for charitable purposes beyond content consumption.