Earthfiles.com Headline News
Society, Paranormal, Crop Circles, Researchers - Earth Files - Real X-Files. Linda Moulton Howe's site has many excellent articles on crop circles.
https://www.earthfiles.com/
Researchers
crop circle formations designs, research, information, resources, theories, non man made, articles, evidence, human consciousness
Society, Paranormal, Crop Circles, Researchers - CropCircleAnswers.com. Home of researchers Ed and Kris Sherwood.
http://cropcircleanswers.com/
Bert Janssen - award winning author, photographer, researcher, life-coach and consultant
Society, Paranormal, Crop Circles, Researchers - Bert Janssen. Articles, films and photos from Netherlands based researcher Bert Janssen.
http://www.bertjanssen.nl/