Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Paranormal is a general term that describes unusual experiences that lack a scientific explanation, or phenomena alleged to be outside of science's current ability to explain or measure. Notably, paranormal phenomena also lack scientific evidence, as detectable but not well explained phenomena such as dark matter or dark energy are not commonly called paranormal. Stories relating to paranormal phenomena are found in popular culture and folklore, but the scientific community, as referenced in statements made by organizations such as the United States National Science Foundation, maintains that scientific evidence does not support paranormal beliefs.