Big Bang – the moment when the matter, energy time and space came together 13.5 billion years ago.
Humans evolved in East Africa about 2.5 million years ago from an earlier genus of apes.
Our closest living relatives include chimpanzees, gorillas and orang-utans.
From about 2 million years ago until around 10.000 years ago the worlds was home to several human species.
Use of fire – 800.000 years ago, it changed the human biology.
The rise of Home sapiens, the last human species, – most of scientists agree that by 150.000 years ago East Africa was populated by Sapiens that looked just like us.
The interbreeding theory and the Replacement Theory.
The biological relatedness of Sapiens, Neanderthals and Denisovans: they were not completely different species.
There is a possibility that Home Sapiens drove the other human species to extinction because they were more proficient hunters and gatherers thanks to better technology and superior social skills. Also, for Sapiens they were too familiar to ignore but too different to tolerate.
Home Sapiens conquered the world thanks above all to the unique language.