Gene Mutations Linked to Language Development- Researchers Believe Aberrations 200,000 Years Ago Aided Human Ability to Speak.They are even trying out the gene in mice. I think only Walt Disney will be happy hear about talking mice.
The Washington Post article:
http://www.washingtonpost.com/wp-dyn/articles/A17863-2002Aug14.htmlOriginal article in Nature:
http://www.nature.com/nsu/020812/020812-6.html