Readers ponder sign language in ancient humans, looped universe

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). Reader Suzanne Lijek wondered if our innate sensitivity to sign language could stem from its use by ancient humans. Our ancestors probably communicated through […]Science News