We solved Roman concrete #shorts #science #SciShow

Hosted by: Hank Green (he/him) Lucas Principe: Writer Heather Hess: Fact Checker Amy Peterson: Script Editor Madison Lynn: Videographer Faith Schmidt: Script Supervisor Stefan Chin: Editor Savannah Geary: Associate Producer Daniel Comiskey: Editorial Director Sarah Suta: Producer Caitlin Hofmeister: Executive Producer Hank Green: Executive Producer Sources: Images: