This is an interview with Dr. Suzana Herculano-Houzel, the scientist who discovered that the human brain has an average of 86 billion neurons, which is significantly less than the 100 billion that was long assumed. She has also written a wonderful book called The Human Advantage: How Our Brains Became Remarkable.

In part 2 or our 10 Anniversary Retrospective we consider the question What is Mind? I reflect back on books and guests who have appeared in the last 5 years, and consider how my take on this question has evolved over the 10 years I have been creating  Brain Science (formerly called the Brain Science Podcast.) Listener feedback is also included.

BS 129 features pioneering neuroscientist Brenda Milner. Dr. Milner is best known for work work on memory including key discoveries she made while working with the famous patient HM. She also made important discoveries about the differences between the brain's hemispheres by studying the so-called "split brain" patients. This interview was recorded in 2008 when Dr. Milner was 90, but I am glad to report that she is still going strong at age 98.

This is a brief 10 minute audio that provides information about Brain Science (formerly the Brain Science Podcast). It includes a brief introduction to the show, some tips about the website and how to support Dr. Campbell's work.

BSP 127 marks the return of placebo researcher Fabrizio Benedetti, author of Placebo Effects: Understanding the mechanisms in health and disease. We talk about some of Dr. Benedetti's most recent research into placebo effects in pain relief and in high altitude headaches. We also talk about some of the ethical issues about using placebos.

BSP 126 is an interview with Andy Clark about his latest book Surfing Uncertainty: Prediction, Action, and the Embodied Mind.