Donald C. Johanson,Lenora Johanson,Blake Edgar
With revolutionary scientific theories, dramatic photographs, and his own exciting discoveries, world-famous paleoanthropologist Donald Johanson supports controversial hypotheses that challenge our most fundamental theories of human ancestry:, 
   Our earliest ancestors left the trees to walk on two legs at least four million years ago as part of a unique sexual strategy. 
   Our first large-brained ancestors survived as scavengers, competing with lions and hyenas for food, rather thatn being the noble hunters of popular imagination. 
   Neandertals are a specialized, extinct side branch of the human family tree and were never part of our own species. 
   Modern humans first evolved in Africa and later migrated around the world. 
 
Science,Anthropology,Nonfiction,Biology,Evolution,History,History,Archaeology
Ancestors: In Search of Human Origins