Crop circles, those beautiful and complex patterns that are visible from the air in fields around the world, have long fascinated the public, media, and scientific community. Vital Signs is a comprehensive guide for newcomers to these puzzling patterns and an essential history for those who are already intrigued. Illustrated with hundreds of full-color and black-and-white photos, this chronological and photographic history is an accessible discussion of the various crop circle theories, physical and statistical evidence, and the surprising effects these formations have had on observers and researchers.

"...these beautiful and joyous creations not only transcend our ordinary understanding of the material world, but confront our sense of the spiritual, too. To learn about the formations is remarkable enough, but to see and enter and savor them is truly awesome…poised as we are on the brink of ever more mind-blowing formations and hidden messages, it is a blessing that we have a guide as inspired as Andy Thomas."
—from the Foreword by Mike Leigh

"One of the best books on crop circles to emerge in years...Highly recommended."
—UFO Magazine