NEW! Evolutionary Tidbit of the Moment
In seemingly unrelated languages from every corner of the globe, the word corresponding to "mother" contains a sound like /ma/, as in "amma," "mama," or "ima." Father words tend to have the /pa/ or /ba/ sound, like "appa," "abba," "baba," or "papa." A discarded hypothesis held that the words for "mother" and "father" had remained largely unchanged from a proto-language from which all modern languages evolved.
The currently favored explanation is that these are the first sounds infants are able to make, with /m/ being slightly easier (and thus developing sooner) than /p/ or /b/, explaining why the primary caretaker (usually the mother) tends to be referred to by words which sound like "mama" in languages all the world over.