DragonflyIssuesInEvolution13 Wiki

Hominid evolution & development - The Discovery


Evolution in brain size over time. http://goldendome.org/evolutionofman/BrainSize.jpg

Biological and cultural adaptations that together enhanced survival and reproduction in changing environments caused evolution in hominids. There were several major events in hominid evolution including: increased meat eating, cooking of food, controlled use of fire, milking of cattle, among others (Arjamaa & Vuorisalo, 2010). These events caused evolutionary changes in hominids from a gene-culture perspective. Increased eating of meats helped to provide more fatty acids, which would help hominid brain evolution.

Arjamaa, O and Vuorisalo, T. 2010. Gene-culture co-evolution and human diet. American Scientist 98: 140 – 147. 

Bigger Brains: Complex Brains for a Complex World[]

The Smithsonian National Museum of Natural History has a great website for information on hominid brain evolution.  Here you can visit the many discoveries such as: why brain size is increasing, what is causing brain size to increase, or the benefits of a larger brain.  Visit the website to learn more:  http://humanorigins.si.edu/human-characteristics/brains

Changes Climate Braincase Volume KC

This picture shows how brain size increase as the climate fluctuates. http://humanorigins.si.edu/human-characteristics/brains

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