Long lost sisters

The human race was divided into two separate groups within Africa for as much as half of its existence, says a Tel Aviv University mathematician. Climate change, reduction in populations and harsh conditions may have caused and maintained the separation.

If you want to include this story in your blog, copy and paste this formatted text:

<p><a href="http://www.physorg.com/news130091336.html">Long lost sisters</a></p> <p>The human race was divided into two separate groups within Africa for as much as half of its existence, says a Tel Aviv University mathematician. Climate change, reduction in populations and harsh conditions may have caused and maintained the separation.</p>