Mammals Weighing 60 kilograms have an average brain size of 200 cubic cms. Modern sapiens averaging 1,200 - 1,400 cubic cms. Neanderthals brain size was even bigger.

Brain Size

In sapiens, the brain consumes 25% of body’s energy when the body is in rest. While comparing with apes it is high, who consumes only 8% of energy in rest.

Jumbo Brain Is A Jumbo Drain

The animals can survive alone immediately after birth. But humans have to be dependent on mother for years. So, the mother have to seek help from others for foraging and raise the child. This developed the social relationship

Premature Birth

The animals mostly emerge from womb like glazed earthenware while humans are like molten glass. They cannot be remoulded while humans can be trained and learn because of this premature birth.

Flexible To Learn

Women who gave birth earlier was able to survive because of the child’s small brain and head. Death in child birth was higher when the size of the brain and head increased.

Early Birth For Safe Of Women

New York Times BestsellerA Summer Reading Pick for President Barack Obama, Bill Gates, and Mark Zuckerberg From a renowned historian comes a groundbreaking narrative of humanity’s creation and evolution—a #1 international bestseller—that explores the ways in which biology and history have defined us and enhanced our understanding of what it means to be “human.”One hundred thousand years ago, at least six different species of humans inhabited Earth. Yet today there is only one—homo sapiens. What happened to the others? And what may happen to us?Most books about the history of humanity pursue either a historical or a biological approach, but Dr. Yuval Noah Harari breaks the mold with this highly original book that begins about 70,000 years ago with the appearance of modern cognition. From examining the role evolving humans have played in the global ecosystem to charting the rise of empires, Sapiens integrates history and science to reconsider accepted narratives, connect past developments with contemporary concerns, and examine specific events within the context of larger ideas.Dr. Harari also compels us to look ahead, because over the last few decades humans have begun to bend laws of natural selection that have governed life for the past four billion years. We are acquiring the ability to design not only the world around us, but also ourselves. Where is this leading us, and what do we want to become?Featuring 27 photographs, 6 maps, and 25 illustrations/diagrams, this provocative and insightful work is sure to spark debate and is essential reading for aficionados of Jared Diamond, James Gleick, Matt Ridley, Robert Wright, and Sharon Moalem.

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Yuval Noah Harari is an Israeli public intellectual, historian and professor in the Department of History at the Hebrew University of Jerusalem. He is the author of the popular science bestsellers Sapiens: A Brief History of Humankind, Homo Deus: A Brief History of Tomorrow, and 21 Lessons for the 21st Century.

Early Birth For Safe Of Women

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