Original sentence: According to Dr.Shriver said black skin, in other words, may have been favored by men and women in sexual partners, just as pale skin may have been preferred in sexual partners among Europeans and Asians
Edited sentence: Bare skin may have become sexually attractive as a sign of health, hence sexual selection favored darker skin colors.The appearance of dark skin was therefore one of the most important events in human evolution since it enabled humans to lose their body hair and allow a more than threefold increase in brain size