Ball Lightning Imagine seeing a glowing sphere floating through the sky during a thunderstorm. That's ball lightning, a mysterious and rare weather phenomenon that has puzzled scientists for years.

Sprites are akin to gigantic red lightning bursts. Steve Cummer, a Duke University engineer who's studied sprites for years, summed up how they form quite nicely in a National Geographic News ...

The phenomenon, which is difficult to observe, usually occurs during major storms. A Portuguese photographer named Diogo Gualter has shared a video on his social media where he shows the sighting of a ...