In a groundbreaking discovery, scientists have observed trees emitting ultraviolet light during thunderstorms, a phenomenon known as coronae. This ghostly glow is caused by the electrical charge from passing storms inducing currents within the trees. Researchers from Pennsylvania State University, led by meteorologist Patrick McFarland, captured this phenomenon using specialized equipment during storm chases. The coronae appear as faint ultraviolet bursts, hopping sporadically from leaf to leaf, and have been observed in various tree species such as loblolly pines and sweetgums along the US east coast. The study marks a significant step in understanding the electrical interactions between the atmosphere and terrestrial ecosystems.