Or at least around at the same time! Not exactly language evolution, but certainly evolution! A Leakey is involved of course.
LA Times article about the article coming out in tomorrow’s Nature: http://www.latimes.com/news/science/la-ex-evolution9aug09,0,6902183.story?coll=la-home-center
And the Nature editor’s summary – link to full article at the bottom (log into EASE first): http://carlin.lib.ed.ac.uk:2123/nature/journal/v448/n7154/edsumm/e070809-01.html
Hope the dissertations are going well!