Here are the 2011 Ig Nobel Prize winners.

Here are the 2011 Ig Nobel Prize winners.

The prizes were awarded at the 21st First Annual Ig Nobel Prize Ceremony, on September 29, at Harvard University. See ceremony details — and video of the ceremony — at <http://improbable.com/ig/2011/>

PHYSIOLOGY PRIZE: Anna Wilkinson (of the UK), Natalie Sebanz (of THE NETHERLANDS, HUNGARY, and AUSTRIA), Isabella Mandl (of AUSTRIA) and Ludwig Huber (of AUSTRIA) for their study "No Evidence of Contagious Yawning in the Red-Footed Tortoise."

CHEMISTRY PRIZE: Makoto Imai, Naoki Urushihata, Hideki Tanemura, Yukinobu Tajima, Hideaki Goto, Koichiro Mizoguchi and Junichi Murakami of JAPAN, for determining the ideal density of airborne wasabi (pungent horseradish) to awaken sleeping people in case of a fire or other emergency, and for applying this knowledge to invent the wasabi alarm.

MEDICINE PRIZE: Mirjam Tuk (of THE NETHERLANDS and the UK), Debra Trampe (of THE NETHERLANDS) and Luk Warlop (of BELGIUM). and jointly to Matthew Lewis, Peter Snyder and Robert Feldman (of the USA), Robert Pietrzak, David Darby, and Paul Maruff (of AUSTRALIA) for demonstrating that people make better decisions about some kinds of things — but worse decisions about other kinds of things‚ when they have a strong urge to urinate.

PSYCHOLOGY PRIZE: Karl Halvor Teigen of the University of Oslo, NORWAY, for trying to understand why, in everyday life, people sigh.

LITERATURE PRIZE: John Perry of Stanford University, USA, for his Theory of Structured Procrastination, which says: To be a high achiever, always work on something important, using it as a way to avoid doing something that's even more important.

BIOLOGY PRIZE: Darryl Gwynne (of CANADA and AUSTRALIA and the UK and the USA) and David Rentz (of AUSTRALIA and the USA) for discovering that a certain kind of beetle mates with a certain kind of Australian beer bottle.

PHYSICS PRIZE: Philippe Perrin, Cyril Perrot, Dominique Deviterne and Bruno Ragaru (of FRANCE), and Herman Kingma (of THE NETHERLANDS), for determining why discus throwers become dizzy, and why hammer throwers don't.

MATHEMATICS PRIZE: Dorothy Martin of the USA (who predicted the world would end in 1954), Pat Robertson of the USA (who predicted the world would end in 1982), Elizabeth Clare Prophet of the USA (who predicted the world would end in 1990), Lee Jang Rim of KOREA (who predicted the world would end in 1992), Credonia Mwerinde of UGANDA (who predicted the world would end in 1999), and Harold Camping of the USA (who predicted the world would end on September 6, 1994 and later predicted that the world will end on October 21, 2011), for teaching the world to be careful when making mathematical assumptions and calculations. [NOTE: See next section, below, for further details.]

PEACE PRIZE: 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 an armored tank. [NOTE: be sure to see the video.]

PUBLIC SAFETY PRIZE: 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 his face, blinding him. [NOTE: be very sure to see the video.]

Details, with citations and links: <http://www.improbable.com/ig/winners/#ig2011>