What can we learn from the 20th century? Since 1945, the atomic bomb has threatened humanity with extinction; we no longer risk smallpox, eradicated in 1970; will we eat GMOs? Equipped with computers, is our thinking changing? Here is a new death, a new body, a new agriculture, and new networks. To summarize these evolutionary innovations, I coined the word hominescence. Words like adolescence: still a child, the adult is formed; or luminescence: from a faint glow, light is born... illuminate this strange and exact neologism that marks a hominid emergence. When, through his body and death, he changes his relationship to himself through agriculture and the climate, his relationships with the world, and through communications, his interaction with others, is he still the same human? We are living a decisive moment in the process that shapes us. Disturbing for some, this birth excites others. We arouse it without knowing what kind of man it creates, assassinates or magnifies.