In the same section of youtube where the "Signs on earth" video is, there is a video caled,"The two most important crop circles ever".  This shows the crop circles which were done exactly one year after a contact attempt was made by some secular scientists from a beaming device here on earth in 1974. The circles were done in a field  next to the radio telescope that beamed them one year prior. Look at the face exibited in the one "Circle". Does it look familiar? Also, closely tied to the crop circles are various occultic and UFO connections. Even the man made ones generate para-normal experiences in people and instruments. People are praying and chanting at crop circle locations for a visitation. A visitation from the UFOs.