What a Tease

A recent Wired article cites the following:

The pitches in musical scales are likely derived from language. Turns out, aspects of spoken English and Mandarin correlate to the intervals between notes in a chromatic scale (the black and white piano keys in an octave).

Unfortunately, there’s nothing more than this offered as proof.  What a bold statement to make but then not back up.  Anyone out there know anything about this or where to get more details on this?