archaeologist michael spence. bury in cemeteries set apart from the places where the people lived. that makes it difficult to tie them ba into their living quarters. in teotihuacan, fortunately, the people were buried within the apartment compound. some of them were buried in open spaces like patios. these would have been particularly important individuals. but many of them were buried under the floors of the rooms that they had actually lived in. so in teotihuacan, we have the possibility of using these skeletons to try and detect relationships within the apartment compound. keach: thousands of boxes line the walls of a laboratory in mexico's national anthropologmuseum. this is where skeletal remains from excavations at teotihuacan and other sites are stored. looking for evidence of ancient kinship, spence came here to analyze 81 skeletons from a single residential compound known as la ventilla. spence: well, i analyzed them for a series of traits, about a dozen traits. these traits, we think, are partially genet

spence. rob spier, and michael s. walsh.[applause] >> now to begin this evening, our old friend, not old but a good friend -- >> he is old, too. >> he's not that old. atlantic council chairman, senator chuck hagel. is one of the men who constantly reminds us what's best about washington. [applause] >> from serving his country in vietnam to the united states senate, he also serves as co-chairman of the president intelligence advisory board, as co-chair of the present, china 100,000 strong initiative and member of the secretary of defense's policy board. >> ladies and gentlemen, our friend and great leader, senator chuck hagel. [applause] >> mika, thank you. i'm grateful. this is old chuck. i'm here on behalf of the board of directors of the atlantic council, so thank you, to acknowledge what each of you continue to do with the atlantic council. you make a better world for all of us. that is the essence of why we recognize those tonight that joe and mika have already acknowledged. because they represent what is best in mankind