For as long as people have watched storms roll across the sky, lightning has inspired awe and fear. You can see the flash and ...

Thunderstorms often begin to develop early in the day when the sun heats the air near the ground and pockets of warmer air start to rise in the atmosphere. When these pockets of air reach a certain ...

A green spectacle. With protective eyewear, ISTA PHD student Andrea Stöllner takes a glimpse into the experimental chamber (in the foreground) where two laser beams trap a single particle. One ...

He found that the same electron cascade process could explain these events when conditions fall just short of producing lightning. By understanding how small changes in electric field strength affect ...