There are a number of observations that have been made over the
years that seem to indicate that there are particular
characteristics that "genuine" (or non-mandmade) formations
appear to exhibit. Some of the observations are listed below: In
what kind of crops do they occur?Crop circles have been reported
in mostly barley and wheat. But, they also appear in corn, oats,
oilseed rape (canola), grass, ricefields, trees, sand, and even
snow. Where do they appear? They have appeared on almost every
continent and in over 70 countries worldwide -- including the
US, Canada, Australia, Brasil, Russia, India, Germany, and South
Africa. There seems to be a correlation with many forming near
ancient sites. Physical changes of plants and soil - not only
does the physical appearance of seem to change (it looks
dehydrated), but there is change at the molecular level.
Research has been conducted over a ten year period with samples
and thorough laboratory testing carried out by the biophysicist
Dr. Levengood, Nancy Talbott,