GRAND RAPIDS, Mich. (WOOD) — A rare 16th-century book lives on thanks to hard work by a librarian at Michigan State University. MSU has held the copy of Ptolemy’s “Geographia” since it was donated to ...

AT the meeting on Monday of the Royal Geographical Society, Dr. H. Schlichter read a paper on “Ptolemy's Geography of Eastern Equatorial Africa.” Ptolemy, as a geographer, has received very different ...

Almost 2,000 years ago a great Egyptian Greek mathematician, astrologer, geographer and astronomer made some deft calculations -- using what was to be later called Ptolemy’s Theorem -- to calculate ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...