The Sistine Chapel's ceiling is unveiled, the National Weather Service makes its first forecast, the U.S. explodes its first hydrogen bomb, and Honda opens its first U.S. factory, all on this day.
1968: The Motion Picture Association of America's voluntary film rating system is officially introduced, originating with the ratings G (General Audiences), M (Mature Audiences), R (Restricted) and X (Adults Only). The M rating would be changed to a "GP" rating in 1969 and then finally "PG" in 1970. The PG-13 rating was added in 1984, with the NC-17 rating replacing the unofficial X rating in 1990.
No email address was supplied by
To complete your registration on this site, please supply an address.
Please confirm or modify the email address to which you will have subscription offers sent.
For a more personalized experience, please supply the following optional information.