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 ...

“We explained how photoelectric events occur, what conditions need to be in thunderclouds to initiate the cascade of electrons, and what is causing the wide variety of radio signals that we observe in ...

The locations circled in red are seal damage to the windshield caused by lightning strikes on a United Air Lines Boeing 787. Credit: NTSB The weather that existed for departure from London’s Heathrow ...