http://www.cbsnews.com/stories/2008/...n4040604.shtmlHuman beings may have had a brush with extinction 70,000 years ago, an extensive new genetic study suggests.
The number of early humans may have shrunk as low as 2,000 before numbers began to expand again in the early Stone Age, according to an analysis released Thursday.
"This study illustrates the extraordinary power of genetics to reveal insights into some of the key events in our species' history. Tiny bands of early humans, forced apart by harsh environmental conditions, coming back from the brink to reunite and populate the world. Truly an epic drama, written in our DNA," Spencer Wells, National Geographic Society explorer in residence, said in a statement.