* Archeology and the Evolution of Human Behavior* Artifacts in Africa Suggest An Earlier Modern Human* Tools point to African origin for human behaviour* Key Human Traits Tied to Shellfish Remains, nytimes 2007/10/18* "Python Cave" Reveals Oldest Human Ritual, Scientists Suggest
* Artifacts in Africa Suggest An Earlier Modern Human* Tools point to African origin for human behaviour* Key Human Traits Tied to Shellfish Remains, nytimes 2007/10/18* "Python Cave" Reveals Oldest Human Ritual, Scientists Suggest