Hank Green
CrashCourse, SciShow, and the Complexly Empire
Hank Green is the rare figure who has shaped online education not just through his own content but through the infrastructure he has built for everyone else. Alongside his brother John, he launched Vlogbrothers in 2007, and from that foundation grew an empire of educational media that includes SciShow, CrashCourse, and over a dozen other channels under the Complexly umbrella. His channels have collectively accumulated billions of views, and CrashCourse videos are used in classrooms from middle schools to universities around the world.
What makes Green unusual among science communicators is the breadth of his ambition. He is not content to simply explain biology or chemistry, though he does both with infectious enthusiasm. He has co-founded VidCon, the largest conference for online video creators. He built DFTBA Records to help creators sell merchandise. He wrote bestselling science fiction novels. He became one of the most followed figures on TikTok by explaining complex science in sixty-second bursts. Each project feeds the others, creating a flywheel of science communication that reaches people wherever they consume content.
His approach to science education is defined by genuine excitement. When Green explains microbiology or astrophysics, he vibrates with the kind of enthusiasm that cannot be faked. That energy is contagious. Viewers who came for the humor stay for the learning, and many credit his channels with sparking their interest in STEM careers. SciShow alone has produced thousands of episodes covering everything from tardigrades to the chemistry of cooking, and it maintains a pace that would exhaust most production teams.
Beyond content creation, Green has been one of the most thoughtful voices on the ethics and economics of the creator economy. His public reflections on TikTok, platform incentives, and the attention economy have helped shape how creators and audiences think about their relationship with social media. He brings the same analytical rigor to media criticism that he brings to explaining mitochondria, and both audiences are better for it.