Hank Green

American author, vlogger, and science communicator

Born: 5 May 1980, Birmingham
Age: 46
Birth name: William Henry Green II

Hank Green, born William Henry Green II on 5 May 1980 in Birmingham, is an American author, YouTuber, podcaster and science communicator who has made YouTube videos since 2007. He is a member of Vlogbrothers and is associated with the educational series Crash Course and SciShow, and he has written novels including A Beautifully Foolish Endeavor. He studied at Eckerd College and the University of Montana. His YouTube channel had about 2.66 million subscribers in October 2025.