History of the Encyclopædia Britannica the criteria by which the articles were sorted were not obvious even to scholars, despite Dr. Adler's claims that the sorting followed naturally from the "Propædia's" outline of all knowledge. In 1985, the "Britannica" responded to reader requests by restoring the index as a two-volume set. The number of topics indexed by the "Britannica" has fluctuated from 500,000 (1985, the same as in 1954) to 400,000 (1989,1991) to 700,000 in the current 2007 print version. Presumably, this recent increase reflects the introduction of efficient electronic indexing, since the size of the encyclopedia has remained nearly constant at approximately 40 million
Gallileo (skyscraper) Gallileo (skyscraper) Gallileo is a 38-storey skyscraper in the Bahnhofsviertel district of Frankfurt, Germany. It was built from 1999 to 2003. The towers architecture is made up of two towers linked by a connecting central core. The north tower is with 38 storeys, and the south tower is . The core is the building's full height. Together with its floor space, it is the 14th tallest building in the city. Its name is an intentional misspelling of the scientist Galileo's name; the extra l comes from the building's other namesake, the nearby park Gallusanlage. Along with the nearby Silberturm, it