You'll be closer with your pup after you learn these!

Kelsey Boone throws her son, who is deaf, a birthday party. She's overcome when her entire family signs happy birthday to him ...

Miatas can wink with their pop-up headlights, and Porsche owners have their own waves, but only for the right cars.

Facial expressions arise from brain networks that encode slow, context-rich meaning and fast muscle control on different time scales, keeping smiles and threats socially precise.