2012-06-20

[public] 5.69M views, 136K likes, 1.62K dislikes audio only

CGP Grey

http://www.cgpgrey.com/

Images by:

http://www.jackfusco.com/

http://www.flickr.com/photos/dennism2/1504087870/in/photostream/

http://www.flickr.com/photos/pikous/3821434926/

Music by: http://freemusicarchive.org/music/Broke_For_Free/

Special Thanks to the The Royal Institution (http://www.rigb.org/). Go check out their YouTube channel: http://www.youtube.com/user/TheRoyalInstitution.