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 ...

In a small lab at Penn State University, lightning may be happening on a scale smaller than a deck of cards. Victor Pasko, a ...

In brief: The process that creates lightning has never been precisely understood, but scientists know that ice plays a crucial role. New research into developing cold electrical components may have ...

Inside a thunderstorm, warm air is forced upward in a strong updraft. As the air rises, ice and water particles collide inside the cloud, creating electrical charges. Those collisions build up ...

Thank goodness it is Friday, and Weather Whys is the main attraction! We are going to learn how lightning forms and how to stay safe. Meteorologist Zavian Colòn has ...