![Mark Rober on Twitter: "This is my boy. He has Autism. He also has a contagious laugh and gentle, honest heart. He brings joy to all who know him. #AutismDay2017 https://t.co/PQFmIMAUau" / Mark Rober on Twitter: "This is my boy. He has Autism. He also has a contagious laugh and gentle, honest heart. He brings joy to all who know him. #AutismDay2017 https://t.co/PQFmIMAUau" /](https://pbs.twimg.com/ext_tw_video_thumb/848742335621906433/pu/img/UOIKrWf2qriV8vVp.jpg)
Mark Rober on Twitter: "This is my boy. He has Autism. He also has a contagious laugh and gentle, honest heart. He brings joy to all who know him. #AutismDay2017 https://t.co/PQFmIMAUau" /
![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
![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
![Michael Reeves on Twitter: "It was so cool meeting you @MarkRober! https://t.co/lMIxtcku8n" / Twitter Michael Reeves on Twitter: "It was so cool meeting you @MarkRober! https://t.co/lMIxtcku8n" / Twitter](https://pbs.twimg.com/media/D5HvHpyU8AI5ks6.jpg:large)