Ultraviolet cameras captured faint electrical flashes from leaves and branches as storm charges built up in the atmosphere.

Coronae glow on the tips of spruce needles, induced by charged metal plates in a laboratory. (William Brune) For the first ...

Tree leaves are found to emit tiny electrical sparks during thunderstorms, reshaping how we understand forest and storm ...

Because the sparking happens so uniformly across the branches they observed, the team suspects the phenomenon scales up massively. Tens to hundreds of leaves on every treetop under a thunderstorm ...