Ask Smithsonian: Can Plants Communicate?

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

Ask Smithsonian: What's the Point of Earwax? (01:05)

Ask Smithsonian: When Did People Start Keeping Pets? (01:05)

Ask Smithsonian: What Does the World Look Like When Youre Color Blind? (01:35)

Ask Smithsonian: Whats a Dimple? (01:09)

Ask Smithsonian: Can Animals Predict Earthquakes and Other Natural Disasters? (01:27)

Ask Smithsonian: Why Does My Nose Run When Its Cold Outside? (01:01)

Ask Smithsonian: Why Do We Kiss? (01:11)

Ask Smithsonian: Can Elephants Jump? (00:50)

Video: Ask Smithsonian: What Is Wind? (01:09)

Video: Ask Smithsonian: Why Do We Sneeze? (01:21)