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Over the past 4.5 billion years, millions of species have appeared, developed and finally disappeared. And we can only talk about the animal or plant species of which we have discovered fossils or traces! Even today, scientists identify and describe more than 15,000 species per year... and among this abundance, man (homo sapiens) only appeared recently, 200,000 years ago. What was the first "known" living being on Earth? When did it appear? What did it look like? What are the major stages and major events of life on Earth? Fred takes us on a journey through time, in search of our origins. Find all the episodes of the show on the Mon Science & Vie Junior app! This way: https://www.monsvj.fr/ ➨ Subscribe: http://bit.ly/1BnBIiK ➨ Science & Vie TV, the site: http://www.science-et-vie.tv ➨ Facebook http://on.fb.me/1B9MsSK ➨ Twitter http://bit.ly/1DP3MlK