Humans give off visible light that vanishes when we die, new study shows

It turns out the idea that humans glow might not just be poetic. A new study from the University of Calgary and the National Research Council of Canada has captured physical evidence showing that living organisms, including mice and plants, emit a faint visible light that vanishes upon death.

This barely-there glow, known as ultraweak photon emission (UPE), is produced by chemical reactions inside cells. While these biophotons are far too dim for our eyes to see, they’re very real, and...