A look at the science behind yawning

To many yawning is simply a reflex that occurs when one is tired or bored. Evolutionary Neuroscientist, Andrew Gallup has been “tirelessly” studying the science behind yawning. He joins Hari Sreenivasan via Google Hangout with his insights.

SciTech Now Episode 402

In this episode of SciTech Now, a look into how scientists are using cameras to understand insect flight; the study of how plants know which way is up; the reason why yawning occurs; and a sustainable cemetery inside a nature preserve.