NWPTV Presents

Dr. Universe: Why is Yawning Contagious?

Clip | 1m 20s

The Dr. Universe crew at Washington State University aims to answer your most burning science questions! This week they tackle good ole yawning. "Why is yawning contagious?" Find out why we yawn and why we make others yawn around us.

Aired: 06/24/16

Rating: NR

Problems Playing Video?