• American mathematician Nathaniel Bowditch published the first edition of his “American Practical Navigator” in 1802. It is still in print today, now in its 78th printing, which comes with a CD-ROM.

When the U.S. Secret Service was founded in 1865, its primary responsibility was:

A) The protection of the president and his family

B) Protection of classified documents

C) Combating counterfeit currency

D) Surveillance of foreign spies

Previous answer: With 2004 profits of more than $1 billion, the world’s most profitable TV network is HBO. Its revenues come from subscriber fees, DVD sales and syndication rights.