Michael Mosley takes an informative and ambitious journey exploring how the evolution of scientific understanding is intimately interwoven with society's historical path. We now know that the brain - the organ that more than any other makes us human - is one of the wonders of the universe, and yet until the 17th century it was barely studied. The twin sciences of brain anatomy and psychology have offered different visions of who we are. Now these sciences are coming together and in the process have revealed some surprising and uncomfortable truths about what really shapes our thoughts, feelings and desires. And the search to understand how our brains work has also revealed that we are all - whether we realise it or not - carrying out science from the moment we are born.

Who Are We? Michael Mosley examines one of the least understood yet most important subjects in science – the human brain. He considers why it took until the 17th century for the organ to be studied in depth, reveals the surprising results of uniting the twin sciences of anatomy and psychology to learn what shapes thoughts, feelings and desires, and argues that whether people are aware of it or not, the workings of the brain mean everyone is a scientist underneath. Last in the series.