Imagine if giving docs a single drop of semen was all it took to keep you healthy. Your dream could soon become a reality, as the Pentagon pushes for every male soldier to hold his health, quite literally, in the palm of his hand.
A new book reveals that a member of MI6, the British spy agency, discovered during WWI that semen makes excellent invisible ink and often deployed it in the field. The name of the man who discovered this? Mansfield Cumming.
