pIn the first part of this book I discussed how the human brainppdeveloped due to the development of languageppIn the second and third part, I analyzed all aspects which areppmentioned below.pp- prehistoric humans lived in a terrestrial atmosphere wereppC14 isotope concentration was intermittently higher thanppusual because a chain of geomagnetic events occurred inppthis epochpp- the C14 isotopes were incorporated into plants, andpptransmitted by ingestion to animals in the form of C14-Glucosepp- biological processes involving C14-Glucose in humansppconducted to a reduction of organic production of nitric oxidepp- a lesser apport of nitric oxide favored a healthier cellularppdevelopment that decreased the sensitivity to viruses andpppathogens this aspect helped humans to migrate and betterppadapt to new environmentspp- but for the most of it, the decline of nitric oxide led to significantppincreases in neurogenesis that stimulated the brain plasticity, ppbut also, it favored a chain of