A graph detailing the origin of modern humans using the Multiregional theory of human evolution. The horizontal lines represent 'multiregional evolution' gene flow betwen regional lineages.
Wikipedia

"An artist's impression of Mitochondrial Eve
who probably lived in Africa,
about 150,000 years ago."
Wikipedia

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"Out of Africa"
vs.
"Multi-Regional Hypothesis"

see also:

Map of early human migrations
according to mitochondrial population genetics
Wikipedia

(enlarge map)

One model of human migration based on Mitochondrial DNA
Wikipedia

In the News . . .

• First Migration from Africa Less Than 95,000 Years Ago: Ancient Hunter-Gatherer DNA Challenges Theory of Early Out-Of-Africa Migrations -- ScienceDaily (22 March 2013)
  
  
• Tracing Humanity's African Ancestry May Mean Rewriting 'Out of Africa' Dates Science Daily -- ScienceDaily (13 December 2012)
  
  
• Writer Prepares to Retrace Early Humans' Journey Out of Africa's Great Rift Valley -- Guardian (08 December 2012)
  
  
• Africa's Homo Sapiens Were the First Techies -- ScienceDaily (05 december 2012)
  
  
• How Human Beings Almost Vanished From Earth In 70,000 B.C. -- NPR (22 October 2012)
  
  
• Fuller Picture of Human Expansion from Africa -- ScienceDaily (22 October 2012)
  
  
• Recapturing the heritage of the Khoe-San -- Past Horizons (21 September 2012)
  
  
• Khoe-San Peoples Diverged Before 'Out-Of-Africa' Migration of Modern Humans -- ScienceDaily (20 September 2012)
  
  
• Genetic Mutation May Have Allowed Early Humans to Migrate Throughout Africa -- ScienceDaily (19 September 2012)
  
  
• Adaptive Evolution of the FADS Gene Cluster within Africa -- PLoS ONE (19 September 2012)
  
  
• Out of Africa? Data Fail to Support Language Origin in Africa -- ScienceDaily (15 February 2012)
  
  
• Following Genetic Footprints Out of Africa: First Modern Humans Settled in Arabia -- ScienceDaily (26 January 2012)
  
  

• African and Non-African Populations Intermixed Well After Migration out of Africa 60,000 Years Ago, Genome Studies Show -- ScienceDaily (13 July 2011)
  
  
• Ancient Hominids May Have Been Seafarers -- ScienceNews (08 January 2010)
  
  
• Arabian Artifacts May Rewrite 'Out of Africa' Theory -- Live Science (30 November 2011)
  
  
• Chinese Challenge to 'Out of Africa' Theory -- New Scientist (03 November 2009)
  
  
• Early Humans' Route Out of Africa 'Confirmed' -- BBC News (02 November 2011)
  
  
• Fish Swam the Sahara, Bolstering Out of Africa Theory -- Live Science (28 December 2010)
  
  
• Genetic "Adam" never met "Eve" -- BBC
  
  
• Greening Of The Sahara Desert Triggered Early Human Migrations Out Of Africa-- ScienceDaily (09 November 2009)
  
  
• Human Ancestor Older Than Previously Thought; Finding Offers New Insights Into Evolution -- ScienceDaily (29 June 2011)
  
  
• Humans Left Africa Earlier, During Ice Age Heat Wave -- National Geographic News (27 January 2011)
  
  
• Humans 'Left Africa Much Earlier' -- BBC News (27 January 2011)
  
  
• Innovation Linked to Human Migration Out of Africa -- National Geographic New (31 October 2008)
  
  
• Language Like People Came Out of Africa -- Telegraph (14 April 2011)
  
  
• New Classification Of African Middle Stone Age -- ScienceDaily (31 October 2008)
  
  
• New Evidence Provides An Alternative Route 'Out Of Africa' For Early Humans -- ScienceDaily (15 October 2008)
  
  
• New 'Molecular Clock' Aids Dating Of Human Migration History -- ScienceDaily (04 May 2009)
  
  
• 'New Pathway' for African Exodus -- BBC News (14 October 2008)
  
  
• Oman discoveries identify one of the first humans out of Africa -- Past Horizons (02 December 2011)
  
  
• Out-of-Africa Migration Selected Novelty-Seeking Genes -- New Scientist (06 May 2011)
  
  
• Population Genetics Reveals Shared Ancestries -- EurekAlert (24 May 2011)
  
  
• Stone Age humans crossed Sahara in the rain -- New Scientist (09 November 2009)
  
  
• Technological Innovation May Have Driven First Human Migration -- Nature (30 October 2008)
  
  
• Teeth and jaw are from 'earliest Europeans' -- BBC News (02 November 2011)
  
  
• Videos
  
  
  • Children of Eve (58 min., 1987, VC 961) -- a historical look at "Eve" and other important finds
    
    
  • VIDEO: Proof of Bible's King David? -- National Geographic News (31 October 2008)
    
    
• Which Way 'Out of Africa'? -- EurekAlert (13 October 2008)
  
  
• Y-Chromosome: Y and Mighty -- Kevin MacDonald