public marks

PUBLIC MARKS from shankargallery with tags education & human

06 February 2007 00:00

ANTHROPOLOGY:No Last Word on Language Origins -- Holden 282 (5393): 1455 -- Science

Nothing is more human than speech.Human beings were anatomically ready to speak more than 150,000 years ago--but clear evidence that they were doing so does not appear for 100,000 years afterward