The world becoming more integrated into one global community will result in taller and smarter people.  

A recent study shows that children of genetically diverse couples tend to be taller and smarter than those of couples from the same race.

The study was conducted by researchers from the University of Edinburgh who analyzed the genetic makeup and health of more than 350,000 respondents from about 100 different communities across the world.

The results suggest that the farther the parents were related (in terms of culture and race), the taller the children were. The study also showed that these children also had higher levels of education compared to their parents and received higher scores in cognitive tests. Interestingly enough, the study did not find any connection between the diverse genes and cholesterol level despite what some previous researches suggested.

Nathan Richardson, the head of the Medical Research Council's molecular and cellular medicine department explained to The Guardian that it is a common belief that a varied gene-pool is good, "but the discovery that height is associated with diversity wouldn't have been foreseen."

Dr. Peter Joshi, who co-authored the study says that their research answers questions regarding the importance of genetic diversity, but that scientists should now focus on what parts of the human genome would benefit the most from this.

Another author of the study, Jim Wilson, said their study implies that "outbreeding" would have been a big advantage during the course of human evolution.

"A smarter prehistoric man would have a survival advantage," he said. "And we can of course imagine circumstances where the taller you are the better chance you have of surviving."

But aside from genetic diversity, factors like better nutrition, access to health care and education should also be considered as reasons why succeeding generations are more intelligent and more suited to survival.