What makes us human? The answer may be found in overlooked DNA 

Our DNA is very similar to that of the chimpanzee, which in evolutionary terms is our closest living relative. Stem cell researchers have now found a previously overlooked part of our DNA, so-called non-coded DNA, that appears to contribute to a difference which, despite all our similarities, may explain why our brains work differently.

Source: What makes us human? The answer may be found in overlooked DNA — ScienceDaily