How does remembering work? Delve into the way the brain stores, processes and retrieves memories -- and why certain ones sometimes prove unreliable.

Why do we dream? When the lights go out, interesting things happen in the brain and body. What’s the significance of dreams, and what can they teach us?

Feeling anxious? You're not alone. Stand-up comedian Maria Bamford shares her personal experience with OCD in this examination of anxiety disorders.

What happens to a brain on psychedelics? Turn on, tune in and drop out on this trip to explore the history and effects of mind-altering substances.