If It Is Adventure You Seek, These books on exploration are marvelous finds.

BY LAURENCE BERGREEN
Saturday, November 3, 2007 12:01 a.m. Mr. Bergreen is the author of "Over the Edge of the World: Magellan's Terrifying Circumnavigation of the Globe" (2003) and "Marco Polo: From Venice to Xanadu," just published by Knopf.