The clock tower was used to set a standard time.

UNESCO: Culture

After the 1968 Ronan Point tower block partial collapse in London, in which four people died, new British Standard Structural Design Codes for concrete were introduced to prevent it happening again.

BBC: WTC collapse forces skyscraper rethink

Recently she parted with her longtime manager, and she says her new management team is helping her "play catch-up" on now-standard methods for reaching fans. (About 18, 000 people "liked" the Eiffel Tower snapshot she posted on Facebook recently.) And Blue Note has been courting magazines and music blogs more attuned to indie acts and unsigned discoveries.

WSJ: Norah Jones Acts Her Age With 'Little Broken Hearts'