Crop Circles
secret  messages in the fields?

These huge and often highly complex designs are etched into field field crops just before the harvest. Since 1975, the phenomena has been increasing and -to date, more than 9 000 have been documented  worldwide.
 Are  secret messages being conveyed ?  How do the electromagnetic properties of crop circles affect people, cell phones and scientific instruments ?  With each new discovery, the mystery gets deeper and the controversy intensifies between scientists, musicians, mathematicians, sceptics and hoaxers.  
Leading authorities and unbiased scientists will answer these questions and more.