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spec: Data presented last month by Joseph McAvoy and a team of archaeologists at the Society for American Archaeology meeting in Philadelphia seem to have firmly established the age of the Virginia site , called Cactus Hill . Presented at the Society for American Archaeology conference in 2005 . If no password is set for an account , the column is marked by an asterisk or an exclamation mark , depending on the distribution . Presented at the Society for American Archaeology conference in 2004 . Teaching Archaeology from the Society for American Archaeology provides a rationale for teaching archaeology in the classroom and several lesson plans that demonstrate how to do it . Mary Eubanks described the latest evidence that corn , or maize , originated as a cross between teosinte and gamagrass , or Tripsacum , in a talk Friday at a symposium on maize held at the annual meeting of the Society for American Archaeology ( www.saa.org ) in Montreal . Little kids played tag , running roughshod over the graves of people they did not even know . Throughout the rest of the month , the data were dominated by diurnal meteorological effects , although a gradual decline could still be seen .