Ask Smithsonian: What’s a Dimple?

Ask Smithsonian: How Long Can a Person Hold Their Breath? (01:32)

Ask Smithsonian: What's the Point of Earwax? (01:06)

Ask Smithsonian: When Did People Start Keeping Pets? (01:06)

Ask Smithsonian: What Does the World Look Like When You're Color Blind? (01:36)

Ask Smithsonian: What’s a Dimple? (01:10)

Ask Smithsonian: Can Animals Predict Earthquakes and Other Natural Disasters? (01:28)

Ask Smithsonian: Why Does My Nose Run When It’s Cold Outside? (01:02)

Ask Smithsonian: Why Do We Kiss? (01:12)

Ask Smithsonian: Can Elephants Jump? (00:51)

Ask Smithsonian: What Is Wind? (01:10)

Ask Smithsonian: Why Do We Sneeze? (01:22)