For a correct functioning of the brain, it is essential that the number of neurons is the appropriate one: neither more nor less.

Neurologist Rita Levi-Montalcini won the Nobel Prize of Medicine in 1986. She was member of the United States National Academy of Sciences and Goodwill Ambassador of the (FAO), and she created a foundation to help African women and girls to study.

The disappearance of Oliver Sacks on 30 August 2015 marked the end of an era. His final farewell represented the loss of a great figure, an immensely influential voice truncated.