However, it does not mean that if their brains are bigger does not mean they are smarter than people living in the southern belaha earth. The reason why their big brains because they live in areas that are rarely exposed to sunlight.
As a result, the human brain that lives in the northern hemisphere was experiencing the evolution of the eye with a larger size because they must try to adjust the light in the northern hemisphere.
Eiluned Pearce, of Oxford University's School of Anthropology, provide an explanation. "When I moved away from the equator then light the less light is available so that makes humans have evolved with eyes and brains are bigger.
"Their brains must ultimately resolve the problem by providing extra visual input," said Pearce. He conducted the study by measuring the eye sockets and brain capacity of 55 brains of early humans around the world.
"Having a large brain volume does not mean making people smarter," he said. The results are then published in the journal of the Royal Society journal Biology Letters. One of the contents of the discovery was mentioned that the earliest humans must adapt to lower light when they moved out of Africa.
The brain of an ancient British human-sized and close to 26 milliliters of people from the Scandinavian region with the largest brain size. Meanwhile, people living near the equator have the brain capacity reached 22 milliliters.
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