Kris Kringle makes a little deaf girl very happy by speaking in sign language with her.

Dr. Eva Zambrano speaks with a deaf patient after an emergency operation.

Maddie and her sister speak about Maddie's book and cooking.

Alejandro speaks in a combination of Spanish and Mexican Sign Language t convey to a deaf man that they need food and shelter.

Jason Silva ponders whether our brains are instinctively empathetic or whether it is a learned behavior.