Hosted at the University of Pennsylvania, this elaborate, regularly updated Web site features historical, literary, and archaeological information about the ancient Roman colony of Corinth in Greece. Browser plug-ins allow you to fly through the city, traverse digital maps, and view three-dimensional models of various structures.Go to: http://corinth.sas.upenn.edu

New computer simulations of the changing environmental conditions around one of the Anasazi cultural centers in the first part of the last millennium suggest that drought wasn't the only factor behind a sudden collapse of the civilization. (p. 174)

Excavations in China yield surprising finds of 800,000-year-old stone hand axes. (p. 148)

Investigations at a 3,700-year-old Egyptian town have yielded a painted brick that was used in childbirth rituals. (p. 110)

Siberian sites previously thought to have been bases for early human excursions into North America may only date to about 11,300 years ago, when people have traditionally been assumed to have first reached Alaska. (p. 222)