In which Carrie Anne presents a new sing-a-long format and faces her greatest challenge yet - signing off an episode. Want to find Crash Course elsewhere on the internet? Facebook - www.facebook.com/YouTubeCrashCourse Twitter - www.twitter.com/TheCrashCourse Tumblr - thecrashcourse.tumblr.com Support Crash Course on Patreon: patreon.com/crashcourse CC Kids: www.youtube.com/crashcoursekids Produced in collaboration with PBS Digital Studios: youtube.com/pbsdigitalstudios The Latest from PBS Digital Studios: www.youtube.com/playlist?list=PL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV We’ve got merch! store.dftba.com/collections/crashcourse Want to know more about Carrie Anne? about.me/carrieannephilbin Want to find Crash Course elsewhere on the internet? Facebook - www.facebook.com/YouTubeCrashC... Twitter - www.twitter.com/TheCrashCourse Tumblr - thecrashcourse.tumblr.com Support Crash Course on Patreon: patreon.com/crashcourse Category