Bababa, dadada, ahgaga. Got that? Babies are speaking to us all the time, but most of us have no clue what they're saying. To us non-babies, it all sounds like charming, mysterious gobbledegook. To researchers, though, babbling conveys important information about a baby's readiness to learn. This week, we'll revisit a favorite episode exploring the language and behavior of the newest members of the human family.

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