The Oldest Thing Your Brain Still Does Every Night

Every night, your brain does something it has been doing for 300,000 years. But somewhere in the last few centuries, you stopped paying attention. In this video, we explore what ancient humans actually dreamed about — and what modern neuroscience says they got right. Sources referenced: Matthew Walker (UC Berkeley), David Lewis-Williams, Kelly Bulkeley, Max Planck Institute for Human Cognitive and Brain Sciences, Chester Beatty Papyrus (1275 BC).