A one million year old
calvaria found in Ethiopia's Middle Awash may shed new light on the
diversity of Homo erectus . Because of the fossil's Asian
H. erectus characteristics, it calls into question the separation
of Homo erectus into two species.
This article presents interesting
evidence explaining why humans and chimpanzees, although 98.7% identical
in DNA sequences, are so different morphologically, behaviorally,
and cognitively.