Nigeria, June 7 -- Anthropologists seek to see the human family tree?

They're researching, making inroads, but there is a sea.

Historians, was thegreen Sahara, a human exodus strip

between North Africa and sub-Saharan Africa? A slip?

A theory. Or so that's how the scholars hitherto thought,

yet it turns out it was a result of cultural exchange. Right.

Impact?Not necessarily an upshot of general human movement.

Archeologists. A finding of genetically distinct frames, an amazement!

Modern-day Libya. A finding of the remains of a 7,000-year-old human.

Africa. A discovery of two mummified bodies is an evolutionary acumen.

Geneticists talk of a formerly unknown set of humans in the Sahara Desert.

And of a lush Sahara and farming. Wh...