Andreas Sprenger, left, accepts the Ig Nobel award in medicine from Nobel laureate Rich Roberts (physiology or medicine, 1993) during ceremonies at Harvard University in Cambridge, Mass., Thursday, September 22, 2016. Sprenger was part of a team at the University of Luebeck in Germany that found that if you have an itch on one arm, you can relieve it by looking in a mirror and scratching the opposite arm. (Photo by Michael Dwyer/AP Photo)
