The existence of spirits has not been substantiated by any scientific study or viable proof as of 2015. Nevertheless, a large portion of society continues to believe in the existence of spirits.
The existence of spirits has been a subject of debate among scientists and non-scientists for centuries. Albert Einstein suggested that spirits might be left-over energy from a person's body after death. However, Benjamin Radford of Livescience.com argues that this suggestion goes against the fundamentals of physics. A trend of ghost hunting has emerged in the last decade. However, ghost hunters have yet to find any viable evidence that proves that spirits indeed exist.