Anthropologists from the University of Tennessee has conducted original research and found that the head of Americans changed. What is the reason, it is not yet clear, but it is obvious that the skull white Americans have become larger, higher and already, and individuals, respectively, narrowed and stretched out on top. It is possible that it applies to all the other people on the planet.

Big head, short legs, a long torso - the case is evolving human skeleton

The research was conducted by scientists from the faculty of forensic anthropology, University of Tennessee, Knoxville: coordinator of forensic anthropology Whether Gantz, Professor Emeritus Richard Jantz and adjunct assistant Professor Joan Devlin. Scientists have studied 1500 skulls Americans, since the mid 1800's to the mid 1980's, and found a strange phenomenon: the average height from the base to the top of the skull in men increased by 8 mm, volume skull grew by 200 cubic centimeters - almost with a tennis ball. In women with a corresponding increase amounted to 7 mm and 180 cubic centimeters. As a result, the skull was higher by impressive 6.8 % since the late 1800's, while the body height increased by 5.6 %, and the length of the thigh only on 2 %.

The researchers to determine exactly what causes changes in the shape of a head of the Americans. It is not clear whether this is due to evolutionary change or change of lifestyle that modern people is very different from that of their ancestors. Scientists assume that the effect of changing the model of growth through improved nutrition, reduced infant and maternal mortality, reducing the number of physical labour, and the elimination of old ethical barriers to marriage. But what are the reasons are of paramount importance, scientists still do not know.

The researchers also found that people started before physically Mature. In particular, this is reflected in the early closure of the special region of the skull, which is called a wedge-occipital singedrs. Previously, she closed cartilaginous tissue at the age of about 20 years, and now much earlier - at age 14 for girls and 16 for boys.

The studies were conducted only with Americans of European origin, as scientists had for this group, the largest Bank of the samples. However, it is not excluded, that change of the skeleton happen in other regions of the planet, and therefore this trend is common for all mankind. Change comes quickly and make you think over what drew many fiction writers describing sedentary people of the future, as beings with a disproportionately large head, short legs, a long torso and arms. Interestingly, many contactees with aliens" describe exactly such creatures, and some of UFOlogy consider their guests from the future.