World population
<p>Apr 10, 2009 9:04 AM
 
Current Pop. as of today is  6.77 billion.
 
World births  137 million per year;  deaths 56million per year = 80 million per year net increase.
 
It is estimated that over 57 <a title="Million" href="/wiki/Million">million</a> people lived in the combined eastern and western <a title="Roman Empire" href="/wiki/Roman_Empire">Roman Empire</a> (300–400 AD
 
The <a title="Black Death" href="/wiki/Black_Death">Black Death</a> <a title="Pandemic" href="/wiki/Pandemic">pandemic</a> in the 14th century may have reduced the world's population from an estimated 450 million to between 350 and 375 million in 1400.<a title="" href="#cite_note-7"><sup class="reference" id="cite_ref-7">[</sup><sup class="reference" id="cite_ref-7">8]</sup></a>
 
Birth of Christ  200M people...   note ... it took 1400 years for it to double to 400M by 1400.
 
Ancient Greece (500 BC)  100M people
 
10,000 BC  1M  people
 
70,000 BC  (TOBA)  a few thousand or less.</p>