It's one of nature's most striking regular phenomena, but you may not know that lightning can appear in many different forms. Intracloud lightning is contained within one cloud jumping between ...

When it comes to lightning, most people see it and head for safety, choosing not to stop and discuss what type it is. But researchers say they have developed a technique that shows how diverse ...

It starts with a flash that slices through the sky. Moments later, thunder follows with a deafening rumble. You are told to stay indoors, unplug your phone, or avoid touching anything metallic. Some ...