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 ...

Ball lightning is not fully understood. It has been proposed that a stable lump of electromagnetic energy, known as a soliton, could be responsible, but such structures are usually microscopic. Now, ...

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 ...