Lightning strikes happen when electricity builds up inside storm clouds and between the clouds and the ground. Inside a thunderstorm, tiny ice particles and small hailstones bump into each other as ...

This week's question comes from Morning Brief reader Mark: "I recently saw a video of upward lightning in Oregon. How and why ...

“Our findings provide the first precise, quantitative explanation for how lightning initiates in nature,” Pasko said. “It connects the dots between X-rays, electric fields and the physics of electron ...

A research team at Los Alamos National Laboratory recently found that the strength difference between two very high-frequency radio pulses in lightning is closely related to the altitude of the ...