'Ghost' Crowns After a Storm: Scientists Discover an Invisible Glow for the Human Eye in the Treetops

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Scientists have discovered imperceptible electric shocks to the human eye in the trees during episodes of thunderstorms. These, known as ghost crowns, as they are weak and invisible, emit a flashing blue glow that so far could only have been intuited after laboratory tests. However, researchers were able to observe this glow in the branches of several species of trees along the east coast of the United States during the summer of 2024.