The Hundredth Monkey takes its title from philosopher Ron Amundson's expose of the "Hundredth Monkey Phenomenon," a claim about collective consciousness. Forty-three essays by thirty-nine authors, including Isaac Asmov, Martin Gardner, Carl Sagan, Ray Hyman, Paul Kurtz, and James Randi, examine aspects of paranormal and fringe-science beliefs from an authoritative, scientific point of view. The penetrating and entertaining essays, many with timely postscripts, are grouped into nine categories:


- Understanding Human Need
- Examining Popular Claims

- Encouraging Critical Thinking
- Medical Controversies

- Evaluating the Anomalous Experience
- Astrology

- Considering Parapsychology
- Crashed Saucer Claims

- Controversies Within Science

Scientists and scholars discuss the burden of skepticism and the delicate balance between a creative openness to new ideas and the relentless scrutiny of new claims. A classic source book for scientifically responsible explanations of controversies, hoaxes, bizarre mysteries, and popular cultural myths.