Shark Rober | Mark Rober is putting his own blood on the line to test whether sharks truly have a taste for it. Watch Shark Rober now on Discovery GO 👉...
![Mark Rober: How An Ex-NASA Engineer Became YouTube's Coolest Science Teacher—And Is Saving The Ocean Mark Rober: How An Ex-NASA Engineer Became YouTube's Coolest Science Teacher—And Is Saving The Ocean](https://imageio.forbes.com/specials-images/imageserve/6194d62891e4bbfba0b17a66/0x0.jpg?format=jpg&crop=956,538,x251,y33,safe&width=1200)
Mark Rober: How An Ex-NASA Engineer Became YouTube's Coolest Science Teacher—And Is Saving The Ocean
![Mark Rober on Twitter: "New video dropping later this week. I'm stoked about this one. https://t.co/BH7iv4jyHU" / Twitter Mark Rober on Twitter: "New video dropping later this week. I'm stoked about this one. https://t.co/BH7iv4jyHU" / Twitter](https://pbs.twimg.com/media/EAHDvTYVUAECSJH.jpg)
Mark Rober on Twitter: "New video dropping later this week. I'm stoked about this one. https://t.co/BH7iv4jyHU" / Twitter
![I am former NASA Mechanical Engineer turned YouTuber Mark Rober. I've been making videos for 9 years and just passed 10M subs. AMA! : r/IAmA I am former NASA Mechanical Engineer turned YouTuber Mark Rober. I've been making videos for 9 years and just passed 10M subs. AMA! : r/IAmA](https://external-preview.redd.it/p3kY7ATSOFU7PI-G2B9j_a5TJo-YCfqnEYv6djZNlgg.jpg?auto=webp&s=b8975deab4c8b24ab74ad4d20372ead43f2e0b88)
I am former NASA Mechanical Engineer turned YouTuber Mark Rober. I've been making videos for 9 years and just passed 10M subs. AMA! : r/IAmA
![Mark Rober: How An Ex-NASA Engineer Became YouTube's Coolest Science Teacher—And Is Saving The Ocean Mark Rober: How An Ex-NASA Engineer Became YouTube's Coolest Science Teacher—And Is Saving The Ocean](https://imageio.forbes.com/specials-images/imageserve/6194d60cf85dafac94db736c/mark-rober-mrbeast-forbes-image/960x0.jpg?format=jpg&width=960)