The Real Reason for Brains

What makes opioids so addictive? Mike Davis explains what we can do to reverse the skyrocketing rates of addiction and overdose.

Uncover the chemistry behind the taste and smell of food, and find out how scientists apply this knowledge to develop artificial flavors.

Jamie Ward, Professor of Cognitive Neuroscience at the University of Sussex. explains what synesthesia is, the variety of different ways in synesthesia can manifest itself, and what is happening in the brains of those who experience it.