A sign of our past? Deaf experimental psychologist Rain Bosworth has found that babies have an intrinsic ability to recognize sign language, Meghan Rosen reported in “Primed to sign” (SN: 4/26/24).

A new study claims to have identified the first speakers of Indo-European language, which gave rise to English, Sanskrit and hundreds of others. By Carl Zimmer In 1786, a British judge named William ...