While auras may come from the realm of pseudoscience, all living beings do emit a faint light, invisible to the human eye—one that is extinguished upon death .

This is the conclusion of a team of researchers from the University of Calgary, Canada, who used a special camera to study such "ultraweak photon emission" (UPE) in mice.

UPE is closely linked to vitality," explained physicist Vahid Salari and colleagues in their paper, published in The Journal of Physical Chemistry Letters .

"The study of UPE has fundamental importance for basic research, as it can be used for non-invasive insights into the biochemical and metabolic processes of living organisms."

UPE has been detected coming from a multitude of life forms—all the way up from single-celled organisms to plants, animals and

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