Add Yahoo as a preferred source to see more of our stories on Google. A Penn State-led study reveals the hidden chain reaction that starts lightning, linking ...

Scientists have known for decades how lightning travels once it forms, but the exact trigger inside a thundercloud stayed uncertain. A new study now offers the clearest explanation yet for how ...

Why Lightning Happens — And Why It’s So Dangerous. Meteorologist Matt Bullock explains.

Thunderstorms belong to a non-exhaustive list of surprisingly mundane things that we know surprisingly little about. Last ...