Crop Circle Connector- Most complete and current coverage.
Crop Circular - Excellent articles and up-to-date information.
Crop Circle Research - Comprehensive historical database.
Swirled News - Informative commentary on latest events.

Dutch Crop Circles
German Crop Circles
Canadian Crop Circles
Norwegian Crop Circles
United States Crop Circles

Dr. W.C. Levengood - Published results of laboratory experiments.
Zef Damen - Detailed mathematical analysis and reconstructions.
Bert Jassen - More mathematical analysis and reconstructions.

Linda Moulton Howe - Reporter, author and crop circle expert.
Colin Andrews - The grandaddy of all crop circle researchers.
Busty Taylor and Lucy Pringle - Archives of aerial photos.

Dr. David Jacobs - Long-standing UFO abduction researcher.
Dr. John Mack - Abductee case studies by Harvard psychiatrist.
Bud Hopkins - Another long-standing UFO abduction researcher.

Art Bell - Popular radio talk show host, author, and UFO witness.
Whitley Strieber - Prolific author, talk show host, and abductee.
Jeff Rense - Radio talk show host featuring UFO related topics.

HBCC UFO Research
UFO Evidence