According to new research, some female bodies have very high standards when it comes to sperm. Professor Sarah Robertson explains we have “a quality-control system” that judges whether the incoming semen is acceptable – if not, Attack! [FoxNews]
According to new research, some female bodies have very high standards when it comes to sperm. Professor Sarah Robertson explains we have “a quality-control system” that judges whether the incoming semen is acceptable – if not, Attack! [FoxNews]