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 electrons, X-rays, and gamma rays. (CREDIT ...

Thunderstorms often begin to develop early in the day when the sun heats the air near the ground and pockets of warmer air start to rise in the atmosphere. When these pockets of air reach a certain ...

Add Yahoo as a preferred source to see more of our stories on Google. Baseball fans clear the stands as lightning strikes near the Colorado Rockies’ stadium in 2019. Julio Aguilar/Getty Images As the ...

“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 ...

He found that the same electron cascade process could explain these events when conditions fall just short of producing lightning. By understanding how small changes in electric field strength affect ...