In a small lab at Penn State University, lightning may be happening on a scale smaller than a deck of cards. Victor Pasko, a professor of electrical engineering, and his team have shown that under ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Penn State scientists demonstrate that lightning-like electrical discharges can occur inside solid materials, not just in storm ...