Ghost hunting, as a science, was developed in the mid-1800s but was never taken very seriously in the scientific community. However, with the invention of advanced technology, more and more interest in the study of parapsychology has developed. In this series of articles, North Texas Paranormal Investigations President, Chris Greene, explains how the study of paranormal phenomenon began and how he and others like him are working to gather irrefutable evidence of otherworldly existence and to invalidate those who use false methods for personal gain.