Homo Erectus left Africa even longer ago than previously thought

[TylerDurden]

http://www.nature.com/news/2011/110606/full/news.2011.350.html

[goodsamaritan]

Is this the "missing link" ?  Has the "missing link" been found yet?

This is I think practical thinking:

"We tend to think of hominins as living in a disease-free world, but maybe they were eliminated in some places by an epidemic, and the only healthy ones left were at the edges of their distribution"

Panspermia can cause disease.