Living plants and animals emit a faint glow that fades after death

This article from The Brighter Side of News reports on a study revealing that living plants and animals emit a faint glow that fades after death. This glow, known as ultraweak photon emission (UPE), originates from metabolic reactions involving reactive oxygen species (ROS) and is visible only with sensitive cameras. The research, conducted by scientists from the University of Calgary and the National Research Council of Canada, shows that UPE is distinct from thermal radiation and bioluminescence, and its intensity correlates with biological activity and chemical stress. After death, the glow fades due to the cessation of active metabolism. The findings suggest UPE could serve as a non-invasive method to monitor biological activity and health in living systems.