Hi there! I'm Mark Rober, an American YouTuber, engineer, inventor, and educator. I'm known for my YouTube videos on popular science and DIY gadgets. Before becoming a full-time content creator, I was an engineer with NASA for nine years, where I spent seven years working on the Curiosity rover at NASA's Jet Propulsion Laboratory. I've always been fascinated by science and technology, and I love sharing my passion for learning with others through my videos.