History's most enduring mysteries and legends involve tales so incredible that they blur the line between fact and fantasy. This nonfiction series for age 12 and up examines current evidence surrounding Bigfoot, alien activity, and other mythical creatures and sites, as well as related conspiracy theories, cover-ups, hoaxes, and famous sleuths. The truth is out there--uncover it! Near-death experiences (NDEs) are medically inexplicable mysteries that can affect anyone. Happening when a person is unconscious, comatose, or clinically dead, NDEs puzzle doctors and scientists with their intensely realistic features. Although no two are the same, NDEs often share similar features: feeling outside one's body, passing through a tunnel, speaking with deceased loved ones, or seeing one's life in review. For readers age 12 and up, this title investigates the phenomena surrounding NDEs, from historical accounts and popular myths to hard facts and evidence. Includes a glossary, index, sidebars, and further resources.