NEW HAVEN, Conn. - The latest scientific analysis of a disputed map of the medieval New World supports the theory that it was made 50 years before Christopher Columbus set sail. The study examined the ink used to draw the Vinland Map, which belongs to Yale University. The map is valued at $20 million — if it is real and not a clever, modern-day forgery. A study last summer said the ink on the parchment map was made in the 20th century. But chemist Jacqueline Olin, a retired researcher with the Smithsonian Institution (news - web sites) in Washington, said...