Why is there only one human species? - BBC News - discu.eu

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Why is there only one human species? http://www.bbc.co.uk/news/science-environment-13874671 114 comments 23/6/2011

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Why is there only one human species? http://www.bbc.co.uk/news/science-environment-13874671 136 comments 24/6/2011 history
Why is there only one human species? http://www.bbc.co.uk/news/science-environment-13874671 5 comments 23/6/2011 reddit.com

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