Human evolution: Shaped by water; A new theory that is convincing
July 9, 2014 Leave a comment
Human evolution: Shaped by water; A new theory that is convincing
Jul 5th 2014 | From the print edition
The Improbable Primate: How Water Shaped Human Evolution. By Clive Finlayson.Oxford University Press; 202 pages; $27.95 and £16.99. Buy from Amazon.com,Amazon.co.uk
ACCORDING to the standard treatment in evolutionary biology, about 1.8m years ago man’s brain became larger, his gut became smaller and he started walking upright. No ape had done that before. It was an important milestone in the story of human evolution.
The ancestor in question, Homo erectus, could use simple tools and hunt. His diet was more meat-based than plant-based. Meat has more calories than food derived from plants. Humans had transformed themselves from tree-climbing apes that needed to spend a lot of time searching for food to upright, meat-consuming hunters that could roam large distances. So successful was this transformation, evolutionarily speaking, that in due course the descendants ofHomo erectus, modern-day Homo sapiens, had no problems colonising the far reaches of the globe.
Read more at http://www.economist.com.libproxy.smu.edu.sg/news/books-and-arts/21606253-new-theory-convincing-shaped-water