Deaf people are making a profound contribution to the study of language Ann Senghas We all speak smile JUST as biologists rarely see a new species arise, linguists rarely see a new language being born. You have to be in the right place at the right time, which usually you are not. But the past few decades have seen an exception. Linguists have been able to follow the formation of a new language in Nicaragua. The catch is that it is not a spoken language but, rather, a sign language which arose spontaneously in deaf children. Ann Senghas, of Columbia...