If clouds are heavy, why don’t they just fall to the ground? There’s one key concept behind this. Meteorologist Robb Ellis explains.

One witness in Havre de Grace, Maryland, recorded video of the eerie glow, showing the fireball resembled a silent explosion that lit the early morning as most people slept. Nine witnesses from ...

Ball Lightning Imagine seeing a glowing sphere floating through the sky during a thunderstorm. That's ball lightning, a ...

With each passing night as, the crescent slowly widens and it begins to appear against a progressively darker background, its ...

Most of us first spot them as children—the white lines in the blue sky that are the telltale sign of a flight overhead. Contrails are an instant visual reminder of air travel, and a source of much ...