Doctors Perform World's First Full Penis-and-Scrotum Transplant By Sara G. Miller, Health Editor | April 23, 2018 02:30pm ET Doctors Perform World's First Full Penis-and-Scrotum Transplant Credit: Shutterstock

White noise or "white noise". It is the classic sound that many people use to relax, or even more, according to some studies, it is very relaxing for the little ones to reconcile a peaceful sleep.