better decisions about some kinds of things – but worse decisions about other kinds of things – when they have a strong urge to urinate. Peace: Arturas Zuokas, the mayor of Vilnius, Lithuania, for demonstrating that the problem of illegally parked luxury cars can be solved by running them over with a tank. (Note, the vehicle used was not a tank, but a BTR-60 Armoured personnel carrier.) Psychology: Karl Halvor Teigen of the University of Oslo, Norway, for trying to understand why, in everyday life, people sigh. Physics: Philippe Perrin, Cyril Perrot, Dominique Deviterne, Bruno Ragaru and Herman Kingma for trying to determine why discus throwers become dizzy, and why hammer throwers don't, in their paper "Dizziness in discus throwers is related to motion sickness generated while spinning". Physiology: Anna Wilkinson, Natalie Sebanz, Isabella Mandl and Ludwig Huber for their study "No evidence of contagious yawning in the red-footed tortoise Geochelone carbonaria". Public safety: John Senders of the University of Toronto, Canada, for conducting a series of safety experiments in which a person drives an automobile on a major highway while a visor repeatedly flaps down over their face, blinding them. 2012 The ceremony took place on 20 September 2012. Acoustics: Kazutaka Kurihara and Koji Tsukada for creating the SpeechJammer – a machine that disrupts a person's speech by making them hear their own spoken words at a very slight delay. Anatomy: Frans de Waal and Jennifer Pokorny, for discovering that chimpanzees can identify other chimpanzees individually by seeing photographs of their anogenital regions (their behinds). Chemistry: Johan Pettersson, for solving the puzzle of why, in certain new houses in the town of Anderslöv, Sweden, people's hair turned green. Water pipes connected to these houses lacked coatings, so hot water left in the pipes overnight peeled copper from them, leading to very high copper levels in the water. Fluid Dynamics: Rouslan Krechetnikov and Hans Mayer for studying the dynamics of liquid sloshing, to learn what happens when a person walks while carrying a cup of coffee. Literature: The US Government General Accountability Office, for issuing a report about reports about reports that recommends the preparation of a report about the report about reports about reports. Medicine: Emmanuel Ben-Soussan and Michel Antonietti, for advising doctors who perform colonoscopies how to minimize the chance that their patients will explode. Neuroscience: Craig Bennett, Abigail Baird, Michael Miller, and George Wolford, for demonstrating that