I had been noticing a whole series of lightning rods mounted on roof peaks at a nearby shopping mall. They all looked like this: Figure 1 Lightning rod mounted on roof peak. I wondered what purpose ...

If you have ever seen a mysterious ball of lightning chasing a cow or flying through your window during a thunderstorm, take comfort from the fact that you have witnessed a very rare phenomenon.

Inside towering clouds of volcanic ash, stunning lightning storms can create tiny crystal balls, a new study reports. Researchers recently discovered smooth glass spheres in ash from explosive ...