Humans need sleep to survive. But why? Scientists peer into the brain to see what happens as we sleep and understand the powerful role that sleep - or lack of it - plays in memory, trauma and emotion.
Humans need sleep to survive. But why? Scientists peer into the brain to see what happens as we sleep and understand the powerful role that sleep - or lack of it - plays in memory, trauma and emotion.
Humans need sleep to survive. But why? Scientists peer into the brain to see what happens as we sleep and understand the powerful role that sleep - or lack of it - plays in memory, trauma and emotion.
Humans need sleep to survive. But why? Scientists peer into the brain to see what happens as we sleep and understand the powerful role that sleep - or lack of it - plays in memory, trauma and emotion.
Humans need sleep to survive. But why? Scientists peer into the brain to see what happens while we sleep and understand the powerful role that sleep-or lack of it-plays in memory, trauma and emotion.