Does the soul weigh 21 grams?
03:05

Does the soul weigh 21 grams?

Key Facts In This Video

  • 1

    Dr. Duncan MacDougall placed six dying patients on a specialized scale in 1907, hoping to measure the weight of the human soul as it departed from the body. (0:18)

  • 2

    MacDougall repeated his soul-measuring experiment on dogs, which he assumed had no souls. (1:03)

  • 3

    The precise moment of a person's death is extremely hard to measure (or even agree upon) for scientists today. (2:01)

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