From bolts to blue jets, lightning comes in many strange forms.

Add Yahoo as a preferred source to see more of our stories on Google. Lightning is a familiar sight in stormy skies, but a new report has revealed just how far some bolts can travel — in one case, ...

The idiom "out of the blue," used to describe something unexpected, is derived from a potentially deadly weather phenomenon —a "bolt from the blue." According to the National Weather Service, a "bolt ...

"Thunder is impressive," Mark Twain wrote, "but it is lightning that does the work." Anyone who's watched a lightning storm will understand what he meant: Lightning is one of nature's most ...

Though scientists have long understood how lightning strikes, the precise atmospheric events that trigger it within thunderclouds have remained a perplexing mystery. The mystery may now be solved, ...