Lightning is a familiar sight in stormy skies, but a new report has revealed just how far some bolts can travel — in one case ...

"We call it megaflash lightning and we’re just now figuring out the mechanics of how and why it occurs," said Randy Cerveny, a professor of geographical sciences at Arizona State University.

A single flash of lightning stretching more than 800 kilometres across the US has set a new "megaflash" world record. Could ...

A 2017 lightning bolt that travelled across several US states has now been recognised as the longest ever recorded, ...

Eyewitnesses aboard the flight reported seeing near-continuous flashes of lightning outside their windows for more than 20 ...