Well, to get me started I saw a programme about the language of Humans, not really todays known languages nor recent dead ones, but the one we all take for granted.
If your not sure what im talking about then do this little test take 5 children all under 2 years old from 5 different places around the world. Each child comes from a cultural background that speaks a different language, sit them all down in a room and watch. They will play and more importantly they will communicate. None have the education of their parents modern language but all are born with a natural way of communicating, basic though it may be. As Humans get older we learn the tongue of our culture ( and maybe a few others ). This basic language is never really lost we all use it today, we laugh, we scream, we giggle and we cry to name just a few.... we were never taught it's just natural. It is also very close to other animals communictions, chimps do most of these things and their language ( if that is what you wish to call it ) is very similar to that we are born with, one difference is that it does not change as ours does, at least not that we can tell. So is this coincidence or a good case for Evolution..... thats your call.