Crop circle

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For the irrigation method that produces circular fields of crops, see center pivot irrigation.
A 780 ft (240 m) crop circle in the form of a double (six-sided) triskelion composed of 409 circles. Milk Hill, England, 2001.

A crop circle is a sizable pattern created by the flattening of a crop such as wheat, barley, rye, maize, or rapeseed. Crop circles are also referred to as crop formations, because they are not always circular in shape. The documented cases have substantially increased from the 1970s to current times. In 1991, two hoaxers claimed authorship of many circles throughout England.

Twenty-six countries reported approximately 10,000 crop circles in the last third of the 20th century; 90% of those were located in southern England. Many of the formations appearing in that area are positioned near ancient monuments, such as Stonehenge. According to one study, nearly half of all circles found in the UK in 2003 were located within a 15 km (9.3 miles) radius of Avebury.[1] Archeological remains can cause cropmarks in the fields, in the shapes of circles and squares, but they do not appear overnight and they are always in the same places every year.

The scientific consensus is that crop circles are almost entirely man-made with a few exceptions possibly due to meteorological or other natural phenomena.

Contents

History [edit]

The concept of crop circles began with the original late-1970s hoaxes by Doug Bower and Dave Chorley (see Bower and Chorley, below).[2][3][4][5][6] They said that they were inspired by the Tully "saucer nest" case in Australia, where a farmer found a flattened circle of swamp reeds after observing a UFO.[3] Since the 1960s, there had been a surge of UFOlogists in Wiltshire, and there were rumors of "saucer nests" appearing in the area, but they were never photographed.[6] There are other pre-1970s reports of circular formations, specially in Australia and Canada, but they were always simple circles, which could have been caused by whirlwinds.[3] In Fortean Times David Wood reported that in 1940 he had already made crop circles using ropes near Gloucestershire.[7]

Early reports of circular formations [edit]

In 1686, British scientist Robert Plot reported on fairy rings in his The Natural History of Stafford-Shire, and said they could be caused by airflows from the sky.[8][9] In 1991 meteorologist Terence Meaden linked this report with modern crop circles, a claim that has been compared with Erich von Däniken's pseudohistoric claims.[10]

A 1880 letter to the editor of Nature by amateur scientist John Rand Capron, describes how a recent storm had created several circles of flattened crops in a field.[11]

In the 1960s, in Tully, Queensland, Australia, and in Canada, there were many reports of UFO sightings and circular formations in swamp reeds and sugar cane fields.[3] For example, in 8 August 1967, three circles were found in a field in Duhamel, Alberta, Canada, and the Department of National Defence sent two investigators, who concluded that it was artificially made but couldn't make definite conclusions on who made them or how.[12] The most famous case is the 1966 Tully "saucer nest", when a farmer said he witnessed a saucer-shaped craft rise 30 or 40 feet (12 m) up from a swamp and then fly away. When he went to investigate the location where he thought the saucer had landed, he found a nearly circular area 32 feet long by 25 feet wide, where the grass was flattened in clockwise curves to water level within the circle and the reeds had been uprooted from the mud".[3][13] The local police officer, the RAAF and the University of Queensland concluded that it was most probably caused by natural causes, like a down draught, a Willy-Willy, or a waterspout.[13] In 1973, G.J. Odgers, Director of Public Relations, Department of Defence (Air Office), wrote to a journalist that the "saucer" was probably debris lifted by the causing willy-willy.[13] Hoaxers Bower and Chorley were inspired by this case to start making the modern crop circles that appear today.[3]

Modern crop circles [edit]

The majority of reports of crop circles have appeared since the 1970s,[2] and spread in the late 1970s as many circles began appearing throughout the English countryside. This phenomenon became widely known in the late 1980s, after the media started to report crop circles in Hampshire and Wiltshire. After Bower's and Chorley's 1991 statement that they were responsible for many of them, circles started appearing all over the world.[14] To date, approximately 10,000 crop circles have been reported internationally, from locations such as the former Soviet Union, the UK, Japan, the U.S., and Canada. Skeptics note a correlation between crop circles, recent media coverage, and the absence of fencing and/or anti-trespassing legislation.[15]

Although farmers have expressed concern at the damage caused to their crops, local response to the appearance of crop circles can be enthusiastic, with locals taking advantage of the increase of tourism and visits from scientists, crop circle researchers, and individuals seeking spiritual experiences.[5] The market for crop-circle interest has consequently generated bus or helicopter tours of circle sites, walking tours, T-shirts, and book sales.

The last decade has witnessed crop formations with increased size and complexity of form, some featuring as many as 2000 different shapes,[14] and some incorporating complex mathematical and scientific characteristics.[16][17][18]

A video sequence used in connection with the opening of the Olympic Games in London in 2012 shows two crop circle areas shaped as the Olympic Rings. Another Olympic crop circle area was visible for those landing at Heathrow Airport, London, UK before and during the Olympic Games.

Bower and Chorley [edit]

In 1991, self-professed pranksters Doug Bower and Dave Chorley made headlines claiming it was they who started the phenomenon in 1978 with the use of simple tools consisting of a plank of wood, rope, and a baseball cap fitted with a loop of wire to help them walk in a straight line.[19] To prove their case they made a circle in front of journalists; a "cereologist" (advocate of paranormal explanations of crop circles), Pat Delgado, examined the circle and declared it authentic before it was revealed that it was a hoax.[19][20][21] Inspired by Australian crop circle accounts from 1966, Doug and Dave claimed to be responsible for all circles made prior to 1987, and for more than 200 crop circles in 1978–1991 (with 1000 other circles not being made by them).[14][22] After their announcement, the two men demonstrated making a crop circle. According to Professor Richard Taylor, "the pictographs they created inspired a second wave of crop artists. Far from fizzling out, crop circles have evolved into an international phenomenon, with hundreds of sophisticated pictographs now appearing annually around the globe."[14]

Art and business [edit]

A crop circle with the logo of Swedish Railways.

Since the early 1990s, the UK arts collective named Circlemakers[23] founded by artists Rod Dickinson and John Lundberg (and subsequently includes artists Wil Russell and Rob Irving), have been creating crop circles in the UK and around the world both as part of their art practice and for commercial clients.[24][25][26]

On the night of July 11–12, 1992 a crop-circle making competition, for a prize of three thousand UK pounds[27] (partly funded by the Arthur Koestler Foundation), was held in Berkshire. The winning entry was produced by three Westland Helicopters engineers, using rope, PVC pipe, a plank, string, a telescopic device and two stepladders.[28] According to Rupert Sheldrake the competition was organised by him and John Michell and "co-sponsored by The Guardian and The Cerealogist". The prize money came from PM, a German magazine. Sheldrake wrote that "The experiment was conclusive. Humans could indeed make all the features of state-of-the-art crop formations at that time. Eleven of the twelve teams made more or less impressive formations that followed the set design[29]

In 2002, Discovery Channel commissioned five aeronautics and astronautics graduate students from MIT to create crop circles of their own, aiming to duplicate some of the features claimed to distinguish "real" crop circles from the known fakes such as those created by Bower and Chorley. The creation of the circle was recorded and used in the Discovery Channel documentary Crop Circles: Mysteries in the Fields.[30]

In 2009 The Guardian reported that crop circle activity had been waning around Wiltshire, one of the reasons being that makers preferred making promotional circles for companies that pay well for their efforts.[26]

Legal implications [edit]

In 1992, Hungarian youths Gábor Takács and Róbert Dallos, both then 17, were the first people to face legal action after creating a crop circle. Takács and Dallos, of the St. Stephen Agricultural Technicum, a high school in Hungary specializing in agriculture, created a 36-metre (118 ft) diameter crop circle in a wheat field near Székesfehérvár, 43 miles (69 km) southwest of Budapest, on June 8, 1992. On September 3, the pair appeared on Hungarian TV and exposed the circle as a hoax, showing photos of the field before and after the circle was made. As a result, Aranykalász Co., the owners of the land, sued the youngsters for 630,000 Ft (approximately US$3,000) in damages. The presiding judge ruled that the students were only responsible for the damage caused in the circle itself, amounting to about 6,000 Ft (approximately US$30), and that 99% of the damage to the crops was caused by the thousands of visitors who flocked to Székesfehérvár following the media's promotion of the circle. The fine was eventually paid by the TV show, as were the students' legal fees.[citation needed]

In 2000, Matthew Williams became the first man in the UK to be arrested for causing criminal damage after making a crop circle near Devizes.[31] In November 2000, he was fined £100 and £40 in costs.[32] As of 2008, no one else has been successfully prosecuted in the UK for criminal damage caused by creating crop circles.[33]

Explanations [edit]

Formations are usually created overnight,[14] although some are reported to have appeared during the day.[34] Various theories have been put forth ranging from natural phenomena and man-made hoaxes to the paranormal and even animals.[14] While it is not known how all crop circles are formed, the most likely theory as put forth by a variety of scientists and skeptics is that virtually all of them were made by people.[14][35]

Man-made [edit]

The scientific consensus on crop circles is that most or all are constructed by human beings as a prank.[36] The most widely known method for a person or group to construct a crop formation is to tie one end of a rope to an anchor point, and the other end to a board which is used to crush the plants. Sceptics of the paranormal point out that all characteristics of crop circles are fully compatible with them being made by hoaxers.[35] Bower and Chorley confessed in 1991 to making the first crop circles in South England.[14] When some people refused to believe them, they purposefully added straight lines and squares to show that they couldn't have natural causes.[14] In a copycat effect, increasingly complex circles started appearing in many countries around the world, including fractal figures.[14] Physicists have suggested that the most complex formations might be made with the help of GPS and lasers.[14] In 2009, a circle formation was made over the course of three consecutive nights, and was apparently left unfinished, with some half-made circles.[14]

The main criticism of alleged non-human creation of crop circles is that while evidence of these origins, besides eyewitness testimonies, is essentially absent, some are definitely known to be the work of human pranksters, and others can be adequately explained as such. There have been cases in which researchers declared crop circles to be "the real thing", only to be confronted with the people who created the circle and documented the fraud,[37] like Bower and Chorley and tabloid Today hoaxing Pat Delgado,[19][38] the Wessex Sceptics and Channel 4's Equinox hoaxing Terence Meaden,[22][38] or a friend of a Canadian farmer hoaxing a field researcher of the Canadian Crop Circle Research Network.[39] In his 1997 book The Demon-Haunted World: Science as a Candle in the Dark, Carl Sagan concludes that crop circles were created by Bower and Chorley and their copycats, and that UFOlogists willingly ignore the evidence for hoaxing so they can keep believing in an extra-terrestrial origin of the circles.[40] Many others have demonstrated how complex crop circles can be created.[41][42] Scientific American published an article by Matt Ridley,[22] who started making crop circles in northern England in 1991. He wrote about how easy it is to develop techniques using simple tools that can easily fool later observers. He reported on "expert" sources such as The Wall Street Journal, who had been easily fooled and mused about why people want to believe supernatural explanations for phenomena that are not yet explained. Methods of creating a crop circle are now well documented on the Internet.[41]

Some crop formations are paid for by companies who use them as advertising.[26][33][41] Many crop circles show human symbols, like the heart and arrow symbol of love, stereotyped alien faces[43] or the logo of local soccer club Feyenoord.[44]

Hoaxers have been caught in the process of making new circles, for example, in 2004 in the Netherlands.[44] (See more cases in the "legal implications" section)

Cereologists discount on-site evidence of human involvement as attempts of discrediting the phenomena.[44] Some cereologists even argue a conspiracy theory, with governments planting evidence of hoaxing to muddle the origins of the circles.[44] When scientific writer Matt Ridley wrote negative articles in newspapers, he was accused of spreading "government disinformation" and of working for the UK military intelligence service MI5.[22] According to Matt Ridley, many cereologists make a good living from selling books and making personal tours through crop fields (they can charge more than £2,000/person), and they have a vested interest in rejecting what is by far the likely explanation for the circles.[22][45]

Weather [edit]

Some cereologists have suggested that crop circles are the result of extraordinary meteorological phenomena ranging from freak tornadoes to ball lightning, but there is no evidence of any crop circle being created by any of these causes.[14][35]

In 1880, an amateur scientist, John Rand Capron, wrote a letter to the editor of journal Nature about some circles in crops, and blamed them on a recent storm, saying their shape was "suggestive of some cyclonic wind action".[11]

In 1980, Terence Meaden, a meteorologist and physicist, proposed that the circles were caused by whirlwinds whose course was affected by southern England hills.[14] As circles became more complex, Terence had to create increasingly complex theories, blaming electromagneto-hydrodynamic "plasma vortexes".[14] The meteorological theory became popular and it was even endorsed in 1991 by physicist Stephen Hawking who said that, "Corn circles are either hoaxes or formed by vortex movement of air".[14] The weather theory suffered a serious blow in 1991, but Hawking's point about hoaxes was supported when Bower and Chorley stated that they had been responsible for making all those circles.[14] By the end of 1991 Meaden conceded that those circles that had complex designs were made by hoaxers.[46]

Paranormal [edit]

Sketch of a "spaceship" creating crop circles, sent to UK Ministry of Defence circa 1998.

Since becoming the focus of widespread media attention in the 1980s, crop circles have become the subject of speculation by various paranormal, ufological, and anomalistic investigators ranging from proposals that they were created by bizarre meteorological phenomena to messages from extraterrestrial beings.[35][47][48][49] Many crop circles have been found near ancient sites such as Stonehenge, a prehistoric monument located in the English county of Wiltshire. They have also been found near mounds of earth and stones raised over a grave or graves, also known as tumuli barrows, or barrows and chalk horses, or trenches dug and filled with rubble made from brighter material than the natural bedrock, often chalk. There has also been speculation that crop circles have a relation to ley lines.[47][50][51] Many New Age groups incorporate crop circles into their belief systems.

Some cereologist groups think that crop circles are caused by ball lighting, and that the patterns are so complex that they have to be controlled by some entity.[52] Some proposed entities are: Gaia asking to stop global warming and human pollution, God, supernatural beings (for example Indian devas), the collective minds of humanity through a proposed "quantum field", or extraterrestrial beings.[52]

Responding to local beliefs that "extraterrestrial beings" in UFOs were responsible for crop circles appearing, the Indonesian National Institute of Aeronautics and Space (LAPAN) described crop circles as "man-made". Thomas Djamaluddin, research professor of astronomy and astrophysics at LAPAN stated: "We have come to agree that this 'thing' cannot be scientifically proven." Among others, paranormal enthusiasts, ufologists, and anomalistic investigators have offered hypothetical explanations that have been criticized as pseudoscientific by skeptical groups and scientists, including the Committee for Skeptical Inquiry.[26][53][54][55][56] No credible evidence of extraterrestrial origin has been presented.

Animal activity [edit]

In 2009, the attorney general for the island state of Tasmania stated that Australian wallabies had been found creating crop circles in fields of opium poppies, which are grown legally for medicinal use, after consuming some of the opiate-laden poppies and running in circles.[57]

Changes to crops [edit]

Scientists have found differences between the crops inside the circles and outside them, and they are still studying them.[14][35] It has been reported that the pulvini of wheat in 95% of the crop circles investigated were elongated in a pattern falling off with distance from the centre, and that seeds from the bent-over plants grew much more slowly under controlled conditions. Furthermore, traces of crop circles patterns are sometimes found in the crop the following year, "suggesting long-term damage to the crop field consistent with Levengood's observations of stunted seed growth." These current investigations seem to imply that at least in some crop circles, there is more at work than the effects of mechanical crushing of plants by human activity such as the use of microwaves by crop circle artists.[14]

Folklore [edit]

Researchers of crop circles have linked modern crop circles to old folkloric tales, to support the claim that they are not artificially produced.[2] Circle crops are culture-dependent: they appear mostly in Western countries and Japan, but they don't appear at all in Muslim countries.[58]

Fungi can cause circular areas of crop to die, probably the origin of tales of "fairie rings".[2] Tales also mention balls of light many times, but never in relation to crop circles.[2]

1678 pamphlet on the "Mowing-Devil".

A 17th-century English woodcut called the Mowing-Devil depicts the devil with a scythe mowing (cutting)[59] a circular design in a field of oats. The pamphlet containing the image states that the farmer, disgusted at the wage his mower was demanding for his work, insisted that he would rather have "the devil himself" perform the task. This is, however, not a historical precedent of crop circles because the stalks were cut down, not bent.[2] The circular form indicated to the farmer that it had been caused by the devil.[2]

In the 1948 German story Die zwölf Schwäne (The Twelve Swans), a farmer every morning found a circular ring of flattened grain on his field. After several attempts, his son saw twelve princesses disguised as swans, who took off their disguises and danced in the field. Crop rings produced by fungi may have inspired such tales as folklore holds these rings are created by dancing wolves or fairies.[2]

In popular culture [edit]

The popularization of crop circles was mainly due to two different crop circles that had unusual circumstances surrounding them: the Julia set in Britain, and the Scorpio set in the Netherlands. The Julia set was discovered in 7 July 1996, near Stonehenge, formed by complex Julia set figures, appearing at some time between 5 PM and 5:30 PM, with no indication of what or who had caused it. The Scorpio was discovered in 1 August 2001, and cereologists claimed[60] that it corrupted the photos in their digital cameras, and that they could detect ley lines via dowsing.[34]

Gallery [edit]

  • A crop circle in Switzerland.

  • Aerial view of crop formation in Diessenhofen, Switzerland, July 2008.

  • A crop circle in the form of a triskelion.

See also [edit]

Wikimedia Commons has media related to: Crop circles

References [edit]

  1. ^ Jeremy Northcote Spatial distribution of England's crop circles Edith Cowan University, Australia
  2. ^ a b c d e f g h Peter Jan Margry, Herman Roodenburg (2007), Reframing Dutch culture: between otherness and authenticity, Progress in European ethnology (illustrated ed.), Ashgate Publishing, pp. 150–151, ISBN 978-0-7546-4705-8 
  3. ^ a b c d e f Crop circles. Skepticssa.org.au. Retrieved on 2012-01-01.
  4. ^ Carl Sagan, The Demon-Haunted World, Headline Publishing Group, pp. 72–76, ISBN 0-7472-5156-8 
  5. ^ a b Hillary Mayell, Crop Circles: Artwork or Alien Signs page 2. National Geographic. August 2, 2002, Retrieved October 28, 2010
  6. ^ a b Rob Irving and Peter Brookesmith Crop Circles: The Art of the Hoax Smithsonian.com, December 15, 2009
  7. ^ Crop circles. Skepticssa.org.au., citing: Wood, D, (2000), "Pioneer pranksters?" Fortean Times, 131, 52
  8. ^ John Aubrey. The Natural History of Stafford-Shire. The Project Gutenberg EBook
  9. ^ "The Natural History of Staffordshire by Robert Plott; Sciotericum Telescopicum or a new Contrivance of adapting a Telescope to a Horizontall Diall, for observing the moment of time by day or night by Will Molineux". Philosophical Transactions (1683–1775) 16: 207 ff. JSTOR 101866. 
  10. ^ Kevin Greene (1995), Archaeology. An Introduction. The History, Principles and Methods of Modern Archaeology (3, fully revised ed.), Routledge, ISBN 0-203-44720-4, "The difficulties that exist in communicating the results of archaeology have undoubtedly contributed to the flourishing of writers, such as Erich von Däniken, who take a particular delight in deriding the inability of 'experts' to find explanations that seize the imagination of the public. (...) Few archaeologists have sold as many paperbacks as von Däniken; more recently, a meteorologist who linked crop circles to prehistoric ring-ditches or round barrows generated a reaction that no orthodox student of these monuments has ever achieved (Meaden 1991) [in reference to Meaden T. 1991, The Goddess of the Stones: The language of the megaliths, London, Souvenir Press]" 
  11. ^ a b Capron, J. Rand (1880). "Storm Effects". Nature 22 (561): 290. Bibcode:1880Natur..22..290C. doi:10.1038/022290d0.  Google books. Retrieved from "Nature archive for the decade 1880–1889". nature.com. Nature. Retrieved 23 August 2011. , republished in "A case of genuine crop circles dating from July 1880 – as published in Nature in the year 1880." Journal of Meteorology (ISSN 0307-5966: Volume 25, pp. 20–21, Jan. 2000)

    The storms about this part of Surrey have been lately local and violent, and the effects produced in some instances curious. Visiting a neighbour's farm on Wednesday evening (21st), we found a field of standing wheat considerably knocked about, not as an entirety, but in patches forming, as viewed from a distance, circular spots (...) they all presented much the same character, viz, a few standing stalks as a centre, some postrate stalks with their heads arranged pretty evenly in a direction forming a circle round the centre, and outside there a circular wall of stalks which had not suffered. (...) I could not trace locally any circumstances accounting for the peculiar forms of the patches in the field, nor indicating whether it was wind or rain, or both combined, which had caused them, beyond the general evidence everywhere of heavy rainfall. They were suggestive to me of some cyclonic wind action, and may perhaps have been noticed elsewhere by some of your readers.

  12. ^ Canada's Unidentified Flying Objects: The Search for the Unknown at Library and Archives Canada. (French original [1])
  13. ^ a b c The 1966 Tully Saucer Nest. UFO Evidence. Retrieved on 2012-01-01.
  14. ^ a b c d e f g h i j k l m n o p q r s Richard Taylor (August 2011), Feature: Crop circles. Coming soon to a field near you, physicsworld.com, "Today, with the benefit of hindsight, such explanations sound rather contrived. At the height of the debate, though, no less a physicist than Stephen Hawking was prepared to accept some version of Meaden's theory. When a spate of circles appeared in the countryside near his Cambridge home in 1991, Hawking told a local newspaper that "crop circles are either hoaxes or formed by vortex movement of air"." 
  15. ^ "Disease brings poor crop of circles". BBC News. 2001-08-17. Retrieved 2007-02-08. 
  16. ^ 'Beautiful Math Equation' Found in Crop Circle. LiveScience (2010-06-08). Retrieved on 2012-01-01.
  17. ^ West, Marc. (2008-06-30) Pi appears in crop circle. plus.maths.org. Retrieved on 2012-01-01.
  18. ^ Crop circle season arrives with a mathematical message – This Britain – UK. The Independent (2010-05-26). Retrieved on 2012-01-01.
  19. ^ a b c Brough, Graham (1991), "MEN WHO CONNED THE WORLD", Today (UK)(defunct)
  20. ^ William E. Schmidt (September 10, 1991), "2 'Jovial Con Men' Demystify Those Crop Circles in Britain", New York Times 
  21. ^ Houston Chronicle News Services (September 10, 1991), "Two British artists admit playing `circles' hoax for the past 13 years", Houston Chronicle: Section A, Page 18, 2 STAR Edition 
  22. ^ a b c d e Ridley, Hola (July 15, 2002). "Crop Circle Confession". Scientific American. Retrieved 2007-08-16. 
  23. ^ circlemakers.org. circlemakers official website.
  24. ^ Hemming, Henry (2009). In Search of the English Eccentric. John Murray. ISBN 0-7195-2212-9.
  25. ^ Off Kilter. Lundberg's official website. Retrieved on 2012-01-01.
  26. ^ a b c d John Vidal The bizarre revival of crop circles – and advice on how to make your own guardian.co.uk, 5 June 2009
  27. ^ Pelleschi, Andrea (2012). Crop Circles. Essential Library/ABDO. p. 73. 
  28. ^ Jenkins, David (25 Aug 2010). "Crop circle conundrum". The Daily Telegraph. Retrieved 10 August 2012. 
  29. ^ Sheldrake, Rupert. "The Crop Circle Making Competition". Rupert Sheldrake. Retrieved 10 August 2012. 
  30. ^ "Crop Circles: Mysteries in the Fields", Discovery Channel (first broadcast 2002-10-10)
  31. ^ Milmo, Cahal (November 4, 2000). "Police unravel mystery of the crop circle". The Independent (London). 
  32. ^ Sources:
  33. ^ a b Lewis Cohen (25 February 2008), "Mystery surrounds emergency landing", thisiswiltshire.co.uk (local newspaper in Weybridge), "Williams is probably best known as the only person in the UK to be successfully prosecuted for making crop circles. He has since made a name for himself creating crop circles for TV companies and commercial firms (...)" 
  34. ^ a b Margyr and Roodenburg. Reframing Dutch Culture. p. 140-142
  35. ^ a b c d e Joe Nickel Circular Reasoning: The 'Mystery' of Crop Circles and Their 'Orbs' of Light. Skeptical Inquirer. Volume 26.5. September/October 2002 Archive
  36. ^ Skeptic’s Dictionary listing, retrieved 2012-06-15 
  37. ^ Joe Nickell, "Crop-Circle Mania: An Investigative Update", Skeptical Inquirer, cited as reference 6 in "Levengood’s Crop-Circle Plant Research, Skeptical Inquirer, Volume 6.2, June 1996
  38. ^ a b "Flattened. (crop circles hoax)", The Economist (US), September 14, 1991  (subscription required)
  39. ^ Canwest News Service (October 2, 2007), "Farmer embarrassed by crop circle hoax", canada.com 
  40. ^ "The Demon Haunted World", Carl Sagan (Random House, January 1996)
  41. ^ a b c Circlemakers. Circlemakers. Retrieved on 2012-01-01.
  42. ^ Faking UFOs, Roel Van der Meulen (Self Published, 1994)
  43. ^ Crabwood, Pitt, just west of Winchester, Hampshire, UK, "It looks reminiscent of a fake dummy constructed by 'Balok' in a Star Trek episode called 'Corbomite Manourvre (sic)' (series 1)" 
  44. ^ a b c d Margyr and Roodenburg. Reframing Dutch Culture. p. 143-145
  45. ^ Matt Ridley (June 4, 2011), "Houdini, Crop Circles and the Need to Believe", Wall Street Journal 
  46. ^ Hoggart, Simon, and Mike Hutchinson. 1995. Bizarre Beliefs. London: Richard Cohen Books, 59. ISBN 9781573921565. Cited in Joe Nickel's Circular Reasoning
  47. ^ a b Haselhoff, Eltjo (2001) "The Deepening Complexity of Crop Circles: Scientific Research & Urban Legends", Frog Ltd, ISBN 1-58394-046-4
  48. ^ Carroll, Robert (2005) "Skeptics Dictionary: Crop Circles", Wiley, ISBN 0-471-27242-6
  49. ^ Clark Jerome (1995) "Strange and Unexplained Happenings", Gale ISBN 0-8103-9780-3
  50. ^ Margyr and Roodenburg. Reframing Dutch Culture. p. 138–139
  51. ^ Godfrey-Faussett, Charles (2004) "England", Footprint Travel Guides, ISBN 1-903471-91-5
  52. ^ a b Margyr and Roodenburg. Reframing Dutch Culture. p. 138
  53. ^ "Levengood’s Crop-Circle Plant Research". 1996-06. 
  54. ^ Levengood, W.C. (1994). "Anatomical anomalies in crop formation plants". Physiologia Plantaruni 92 (2): 356–363. doi:10.1111/j.1399-3054.1994.tb05348.x. ISSN 0031-9317. 
  55. ^ Tonyrogers.com. Tonyrogers.com (2004-05-28). Retrieved on 2012-01-01]
  56. ^ Ika Krismantari, Crop circles provide food for thought, The Star, 6 February 2011
  57. ^ "Stoned wallabies make crop circles". BBC News. 25 June 2009. Retrieved 31 May 2011. 
  58. ^ Margyr and Roodenburg. Reframing Dutch Culture. p. 152
  59. ^ The "Mowing Devil" Investigated. Swirlednews.com. 22 December 2005 Retrieved on 2012-01-01.
  60. ^ [2]. This formation was discovered at 01-08-2001. Report from Robert Boerman and Jan Willem Bobbink.

Further reading [edit]

  • The Field Guide: The Art, History and Philosophy of Crop Circle Making by Rob Irving and John Lundberg, edited by Mark Pilkington, 2006, Strange Attractor Press, ISBN 0-9548054-2-9.
  • Jim Schnabel, Round in Circles: Physicists, Poltergeists, Pranksters, and the Secret History of the Cropwatchers (Harmondsworth, Penguin, 1993), ISBN 0-14-017952-6.
  • Eltjo H. Haselhoff, The Deepening Complexity of Crop Circles: Scientific Research and Urban Legends, ISBN 0-285-63625-1.
  • Carl Sagan, 1996. The Demon-Haunted world: Science as a Candle in the Dark; "Aliens" pp 73ff.
  • Noyes, Ralph (editor) The Crop Circle Enigma: Grounding the Phenomenon in Science, Culture and Metaphysics (Bath, Gateway Books, 1990), ISBN 0-946551-66-9.
  • Glickman, Michael, "CROP CIRCLES: The Bones of God" (Frog Books, 2009) ISBN 978-1-58394-228-4
  • Taylor, Suzanne, "What On Earth? Inside the Crop Circle Mystery" 2011 DVD 81-minute feature UBC 724101746123
  • Taylor, Richard (2010). "The crop circle evolves". Nature 465 (7299): 693. Bibcode:2010Natur.465..693T. doi:10.1038/465693a. 
  • Crop Circle Jerks by Brian Dunning
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