The origin of dark color in human skin is strongly connected to our African roots. However, it is puzzling how different we are from the great apes… SHAVE a chimpanzee and you will find that beneath its hairy coat its skin is…
An older study by Kumar et al. looking at Flickr and Yahoo 360 noticed not only the typical 80/20 distribution of connections, but also the social importance of the people in the top 20%. These individuals are the “linkers,” the ones that…