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.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] In 1997, the Oxford English Dictionary recorded the earliest usage of the term "crop circles" in a 1988 issue of Journal Meteorology, referring to a BBC film.[8]The coining of the term "crop circle" is attributed to Colin Andrews in the late 1970s / early 1980s.[9][10]Formations are usually created overnight,[17] although some are reported to have appeared during the day.[37] Various theories have been put forth ranging from natural phenomena and man-made hoaxes to extraterrestrials, the paranormal, and even animals.[17] While it is not known how all crop circles are formed, the most likely theory as put forth by a variety of scientists and sceptics is that all, or virtually all, of them were made by people.[17][38]Man-madeSome crop formations are paid for by companies who use them as advertising.[29][36][44] Many crop circles show human symbols, like the heart and arrow symbol of love, stereotyped alien faces,[46] or the logo of local soccer club FeyenoordWeatherSome 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.[17][38]Paranormal[edit]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.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.[60]Changes to crops[edit]A small number of scientists (medical physicist Eltjo Haselhoff,semi-retired biophysicist William Levengood) have found differences between the crops inside the circles and outside them, even though there is a consensus among scientists that the circles are man-made.[17][38]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 with the logo of Swedish Railways.Sketch of a "spaceship" creating crop circles, sent to UK Ministry of Defence circa 1998.。
Do you know crop circles? Before we start our topic, let's view some pictures of crop circles.The flattened wheat formed a circle about six meters across. This circle is called 'the mother of crop circles', which consists of more than 300 various shapes of circles.In some hills of Britain,there are chalk patterns ,the most famous of them is the White Horse,which considers the token ['təukən] of ancient UK,and can takes one's sou[səul] l to next life.以色列外太空幽浮模型馆Israel ['izreiəl] UFO model pavilion[pə'viljən] in outer space模拟它的麦田圈Simulation [,simju'leiʃən] model of crop circles ufos 以色列的12个部落stands for the 12 tribes of Israelthe enormous pattern is also realted to the emblem 象徵['embləm]of Israelthe most profound of the crop circles in England ,it is about 150 in diameter. [dai'æmitə] it is related to pi（π）(ratio of the circumference of a circle to its diameter);in astronomy[ə'strɔnəmi] DefinitionCrop circles appears in plant fields ,through some unclear force to flatten crop and produce geometric patterns. This phenomenon began to attract public attention in the late 1970's.麦田怪圈是在麦田或其他农田上，透过某种力量把农作场压平而产生出几何图案。
Crop CirclesThe earliest crop circle was found in Scotland in 1647. In 20 century 80s, British discovered many crop circles in the wheat field. Therefore, the phenomenon was called crop circles.Many people believed that crop circles were made by aliens. It is reported that many places where lots of crop circles took place frequently may appear UF0. Besides, the crop circles made by human being were rough and the wheat couldn’t continue to grow up any more. However，some crop circles were so perfect that it is impossible to makeby human.In addition, some people considered that crop circles were just made by human. Moreover, crop circles became tourist attractions, which promoted local economic development. Therefore, some people think crop circles were made by British government to increase the income.Besides, some people thought that crop circle was just a natural phenomenon. It was made by tornado, magnetic field or radiation.In my opinion，I believe that crop circles are made by aliens. Because some cropcircles are so perfect and amazing that we human couldn’t make in such a short time. We couldn’t make sure who made the crop circles yet, however, with the development of technology, we will find out the truth.。
