Hank Green and his brother John started the YouTube ... popular projects like the educational channels Crash Course and SciShow, and the online video conference VidCon. The brothers now star ...

Hank Green is semi-jokingly known among his followers ... such as CrashCourse and SciShow. Episodes are expected to release once per month on the last Wednesday of each month.

Hank Green, an online science educator ... He and his brother also created SciShow and Crash Course, two YouTube education shows played in high school classrooms, his online bio reads.