Ever sit outside on a warm summer's evening and notice flashes of lightning, but no actual rain clouds near you? This is commonly referred to as "heat" lightning. While it's not uncommon to see these ...

Lightning has captured people's fascination for millennia. It's embedded in mythology, religion and popular culture. Think of ...

Add Yahoo as a preferred source to see more of our stories on Google. Talk about a bolt from the blue. Scientists July 31 announced the discovery of the world's longest lightning flash ever detected – ...

Talk about a bolt from the blue. Scientists July 31 announced the discovery of the world's longest lightning flash ever detected – a whopping 515-mile-long bolt that blasted across central U.S. skies ...