So, long before my wife Claudia and I had our son, Rupert, 16 months ago, we’d already discussed the importance of bringing him up with both speech and sign language from birth. And that’s exactly ...

While parentese is important for all babies because it helps build the baby's brain for listening, language, and understanding, it's even more important for children who are deaf or hard of hearing.

The way that human adults talk to young children is unique among primates, a new study found. That might be one secret to our species’ grasp of language. By Carl Zimmer If you’ve ever cooed at a baby, ...