“When were psychedelics discovered?”

Stress starts in the mind, but it can take an enormous toll on the body too. Left unchecked, it can even prove fatal. What is stress, from a scientific perspective, and how does it wreak havoc on our bodies when we're in a state of burnout?

Humans are information-seeking beings at heart. But while technology has given us unprecedented access to the data we crave, it has created a deluge of side effects. How are we adapting to information and stimulation overload?

Meditation - training your attention and awareness to reach a calm and stable state - is an ancient practice found all over the world and used in the modern day to manage stress. What's going on in your brain when you achieve this level of focus?

We think of sleep as a period of relaxation and recuperation, but while we snooze, our brains remain incredibly busy, often with intriguing "side effects" like dreams and sleepwalking. What does the mind get up to when we're not paying attention?

Have you ever arrived at your destination with no memory of the journey that got you there? Your unconscious mind has been at work. Does that mean we don't always have free will over our actions and decisions? And what does that tell us about the brain?

The study of dreams is a fascinating journey through neuroscience, biochemistry, psychology, history and anthropology. How do dreams differ around the world, and what do they tell us about the world itself?

The body can create a shocking array of symptoms, from paralysis to seizures, seemingly without any medical explanation. Is the brain responsible, and if so, why does it do it?

How can someone on an acid trip see sounds or hear colours? And why do some people have this same experience all the time, drug-free?