'African mix' is the best

Research team at the University of Edinburgh have established that offspring become cleverer the more apart their parents' ancestral background is.

The team led by Dr Jim Wilson analysed data from 350, 000 people before reaching this conclusion. The clever traits is highly observed in children from parents where one is of African descent and the other is non-African.
Apart from this new discovery, I think it's also very hard to miss out their gorgeous looks too.