Ig Nobel Prizes Honor Self-Colonoscopies and Kidney Stone-Dislodging Roller Coasters

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Not all science awards are reserved for discoveries that revolutionize their fields. As the Ig Nobel Prize recognizes, sometimes a largely pointless, but wildly creative, study is just as worthy of accolades. On September 13, the Ig Nobel Prize continued its tradition of honoring achievements "that make people laugh, and then think" with its 28th annual ceremony.

The Ig Nobel Prize recognizes work across a variety of fields. This year, the medicine prize was awarded to Marc Mitchell and David Wartinger for their investigation of whether or not riding a roller coaster can dislodge a kidney stone. The answer: It can, at least if you're riding in the back car of the Big Thunder Mountain coaster at Walt Disney World. Other notable winners include a study detailing a self-administered colonoscopy and one that asks if using a voodoo doll of your boss is an effective way to manage workplace aggression (it is).

You can check out the full list of 2018 Ig Nobel Prize recipients below.

MEDICINE

"For using roller coaster rides to try to hasten the passage of kidney stones."

Winners: Marc Mitchell and David Wartinger

Study: "Validation of a Functional Pyelocalyceal Renal Model for the Evaluation of Renal Calculi Passage While Riding a Roller Coaster," published in The Journal of the American Osteopathic Association

ANTHROPOLOGY

"For collecting evidence, in a zoo, that chimpanzees imitate humans about as often, and about as well, as humans imitate chimpanzees."

Winners: Tomas Persson, Gabriela-Alina Sauciuc, and Elainie Madsen

Study: "Spontaneous Cross-Species Imitation in Interaction Between Chimpanzees and Zoo Visitors," published in Primates

BIOLOGY

"For demonstrating that wine experts can reliably identify, by smell, the presence of a single fly in a glass of wine."

Winners: Paul Becher, Sebastien Lebreton, Erika Wallin, Erik Hedenstrom, Felipe Borrero-Echeverry, Marie Bengtsson, Volker Jorger, and Peter Witzgall

Study: "The Scent of the Fly," published in bioRxiv

CHEMISTRY

"For measuring the degree to which human saliva is a good cleaning agent for dirty surfaces."

Winners: Paula Romão, Adília Alarcão and the late César Viana

Study: "Human Saliva as a Cleaning Agent for Dirty Surfaces," published in Studies in Conservation

MEDICAL EDUCATION

"For the medical report 'Colonoscopy in the Sitting Position: Lessons Learned From Self-Colonoscopy.'"

Winner: Akira Horiuchi

Study: "Colonoscopy in the Sitting Position: Lessons Learned From Self-Colonoscopy by Using a Small-Caliber, Variable-Stiffness Colonoscope," published in Gastrointestinal Endoscopy

LITERATURE

"For documenting that most people who use complicated products do not read the instruction manual."

Winners: Thea Blackler, Rafael Gomez, Vesna Popovic and M. Helen Thompson

Study: "Life Is Too Short to RTFM: How Users Relate to Documentation and Excess Features in Consumer Products," published in Interacting With Computers

NUTRITION

"For calculating that the caloric intake from a human-cannibalism diet is significantly lower than the caloric intake from most other traditional meat diets."

Winner: James Cole

Study: "Assessing the Calorific Significance of Episodes of Human Cannibalism in the Paleolithic," published in Scientific Reports

PEACE

"For measuring the frequency, motivation, and effects of shouting and cursing while driving an automobile."

Winners: Francisco Alonso, Cristina Esteban, Andrea Serge, Maria-Luisa Ballestar, Jaime Sanmartín, Constanza Calatayud, and Beatriz Alamar

Study: "Shouting and Cursing While Driving: Frequency, Reasons, Perceived Risk and Punishment," published in the Journal of Sociology and Anthropology

REPRODUCTIVE MEDICINE

"For using postage stamps to test whether the male sexual organ is functioning properly."

Winners: John Barry, Bruce Blank, and Michel Boileau

Study: "Nocturnal Penile Tumescence Monitoring With Stamps," published in Urology

ECONOMICS

"For investigating whether it is effective for employees to use voodoo dolls to retaliate against abusive bosses."

Winners: Lindie Hanyu Liang, Douglas Brown, Huiwen Lian, Samuel Hanig, D. Lance Ferris, and Lisa Keeping

Study: "Righting a Wrong: Retaliation on a Voodoo Doll Symbolizing an Abusive Supervisor Restores Justice," published in The Leadership Quarterly

10 Facts About the Winter Solstice, the Shortest Day of the Year

Matt Cardy/Getty Images
Matt Cardy/Getty Images

Amid the whirl of the holiday season, many are vaguely aware of the approach of the winter solstice, but how much do you really know about it? Whether you're a fan of winter or just wish it would go away, here are 10 things to note—or even celebrate—about the shortest day of the year.

1. The winter solstice HAPPENS ON DECEMBER 21/22 in 2019.

Sun setting behind a tree in the winter
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The date of the winter solstice varies from year to year, and can fall anywhere between December 20 and December 23, with the 21st or 22nd being the most common dates. The reason for this is because the tropical year—the time it takes for the sun to return to the same spot relative to Earth—is different from the calendar year. The next solstice occurring on December 20 will not happen until 2080, and the next December 23 solstice will not occur until 2303.

2. The winter solstice hAPPENS AT A SPECIFIC, BRIEF MOMENT.

sun setting through the trees
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Not only does the solstice occur on a specific day, but it also occurs at a specific time of day, corresponding to the instant the North Pole is aimed furthest away from the sun on the 23.5 degree tilt of the Earth's axis. This is also the time when the sun shines directly over the Tropic of Capricorn. In 2019, this moment occurs at 4:19 a.m. UTC (Coordinated Universal Time) on December 22. For those on Eastern Standard Time, the solstice will occur at 11:19 p.m. on December 21. And regardless of where you live, the solstice happens at the same moment for everyone on the planet.

3. The winter solstice mARKS THE LONGEST NIGHT AND SHORTEST DAY OF THE YEAR FOR THE NORTHERN HEMISPHERE.

sun setting over Central Park
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As most are keenly aware, daylight hours grow shorter and shorter as the winter solstice approaches, and begin to slowly lengthen afterward. It's no wonder that the day of the solstice is referred to in some cultures as the "shortest day of the year" or "extreme of winter." New York City will experience 9 hours and 15 minutes of sunlight, compared to 15 hours and 5 minutes on the summer solstice. Helsinki, Finland, will get 5 hours and 49 minutes of light. Barrow, Alaska, will not have a sunrise at all (and hasn't since mid-November; its next sunrise will be on January 22), while the North Pole has had no sunrise since October. The South Pole, though, will be basking in the glow of the midnight sun, which won't set until March.

4. ANCIENT CULTURES VIEWED THE WINTER SOLSTICE AS A TIME OF DEATH AND REBIRTH.

snow on tree branches
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The seeming death of the light and very real threat of starvation over the winter months would have weighed heavily on early societies, who held varied solstice celebrations and rites meant to herald the return of the sun and hope for new life. Scandinavian and Germanic pagans lit fires and may have burned Yule logs as a symbolic means of welcoming back the light. Cattle and other animals were slaughtered around midwinter, followed by feasting on what was the last fresh meat for several months. The modern Druidic celebration Alban Arthan reveres the death of the Old Sun and birth of the New Sun.

5. THE  shortest DAY of the year MARKS THE DISCOVERY OF NEW AND STRANGE WORLDS.

Pilgrims landing at Plymouth Rock
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The Pilgrims arrived at Plymouth on December 21, 1620, to found a society that would allow them to worship freely. On the same day in 1898, Pierre and Marie Curie discovered radium, ushering in an atomic age. And on December 21, 1968, the Apollo 8 spacecraft launched, becoming the first manned moon mission.

6. THE WORD SOLSTICE TRANSLATES ROUGHLY TO "SUN STANDS STILL."

colorful sunset
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Solstice derives from the Latin scientific term solstitium, containing sol, which means "sun," and the past participle stem of sistere, meaning "to make stand." This comes from the fact that the sun’s position in the sky relative to the horizon at noon, which increases and decreases throughout the year, appears to pause in the days surrounding the solstice. In modern times, we view the phenomenon of the solstice from the position of space, and of the Earth relative to the sun. Earlier people, however, were thinking about the sun's trajectory, how long it stayed in the sky and what sort of light it cast.

7. STONEHENGE IS ALIGNED TO THE SUNSET ON the WINTER SOLSTICE.

Stonehenge sunset
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The primary axis of the megalithic monument is oriented to the setting sun, while Newgrange, another structure built around the same time as Stonehenge, lines up with the winter solstice sunrise. Some have theorized that the position of the sun was of religious significance to the people who built Stonehenge, while other theories hold that the monument is constructed along natural features that happen to align with it. The purpose of Stonehenge is still subject to debate, but its importance on the winter solstice continues into the modern era, as thousands of hippies, pagans, and other types of enthusiasts gather there every year to celebrate the occasion.

8. ANCIENT ROMANS CELEBRATED REVERSALS AT THE MIDWINTER FESTIVAL OF SATURNALIA.

Saturnalia parade
A Saturnalia celebration in England in 2012.
Christopher Furlong/Getty Images

The holiday, which began as a festival to honor the agricultural god Saturn, was held to commemorate the dedication of his temple in 497 BCE. It quickly became a time of widespread revelry and debauchery in which societal roles were overturned, with masters serving their slaves and servants being allowed to insult their masters. Mask-wearing and play-acting were also part of Saturnalia's reversals, with each household electing a King of Misrule. Saturnalia was gradually replaced by Christmas throughout the Roman Empire, but many of its customs survive as Christmas traditions.

9. SOME TRADITIONS HOLD THAT DARK SPIRITS WALK THE EARTH ON THE WINTER SOLSTICE.

Snowy woods
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The Iranian festival of Yalda is celebrated on the longest night of the year. In pre-Islamic times, it heralded the birth of Mithra, the ancient sun god, and his triumph over darkness. Zoroastrian lore holds that evil spirits wander the Earth and the forces of the destructive spirit Ahriman are strongest on this long night. People are encouraged to stay up most of the night in the company of one another, eating, talking, and sharing poetry and stories, in order to avoid any brushes with dark entities. Beliefs about the presence of evil on the longest night are also echoed in Celtic and Germanic folklore.

10. SOME THOUGHT THE WORLD WOULD END ON THE 2012 WINTER SOLSTICE.

snowy woods with sun through the trees
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December 21, 2012 corresponds to the date 13.0.0.0.0 in the Mesoamerican Long Count calendar used by the ancient Maya, marking the end of a 5126-year cycle. Some people feared this juncture would bring about the end of the world or some other cataclysmic event. Others took a more New Age-y view (literally) and believed it heralded the birth of a new era of deep transformation for Earth and its inhabitants. In the end, neither of these things appeared to occur, leaving the world to turn through winter solstices indefinitely, or at least as long as the sun lasts.

A version of this story originally ran in 2015.

Cats Make Facial Expressions, But Not Everyone Can Read Them

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takoburito/iStock via Getty Images

Science has finally confirmed what humans have suspected for centuries: Cats are inscrutable creatures prone to peculiar behavior. Some of us, however, are still capable of picking up on their subtle emotional cues, including facial expressions, without relying on clues like tails, ears, or whiskers.

This new evidence of a cat’s slightly malleable face comes from a study in the journal Animal Welfare. Researchers at the University of Guelph in Ontario, Canada, recruited 6329 participants to watch a series of 20 video clips featuring cats reacting to either a positive or negative event. A positive interaction was defined as a feline approaching a human for a treat or an owner-identified action the cat traditionally found pleasant, like climbing into a favorite spot. A negative response was when a cat was confronted with something it wanted to avoid, was prevented from going into an area or outside, or was displaying an obvious sign of distress, like growling. (Sounds were edited out.) Most clips were from YouTube, though some were submitted by veterinarians and university colleagues. Breeds with long hair that might obscure facial changes were omitted. Most respondents were cat owners, and 74 percent were women 18 to 44 years old.

Using these brief clips, the researchers asked subjects to classify the cats as exhibiting positive or negative behavior by relying only on closely cropped footage of a cat’s face. They couldn’t rely on the tail or any other body language. The result? The average score was just 59 percent correct, accurately identifying a cat’s mood in an average of 12 out of the 20 clips. These humans, in other words, had little idea what a cat was experiencing based solely on their faces.

So why do researchers think they have any expression at all? Roughly 13 percent of subjects scored well on the test, getting at least 15 of the 20 questions correct. Those that did well were generally people who had extensive experience with cats, like veterinarians. That led researchers to conclude that people can become more attuned to the subtle flickers of emotion that may pass over a cat’s face.

“They could be naturally brilliant, and that’s why they become veterinarians,” Georgia Mason, a behavioral biologist and the study’s senior author, told The Washington Post. “But they also have a lot of opportunity to learn, and they’ve got a motivation to learn, because they’re constantly deciding: Is this cat better? Do we need to change the treatment? Does this cat need to go home? Is this cat about to take a chunk out of my throat?”

The paper appears to offer encouraging evidence that “cat whisperers” really do exist. If you’re curious whether you could be one of them, you can take a shortened version of the video test online.

[h/t Washington Post]

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