Polar stratospheric clouds are very rare, as they occur between 49,000 and 82,000 feet up, in the stratosphere layer of the atmosphere over the Earth's poles, where very few clouds usually form ...

A stunning cloud iridescence created a bright silhouette above the mountains in the Philippines. Footage shows the optical illusion shimmering in the sky in Davao del Sur. Pastel blue, reddish ...

At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than ...

Clouds are fascinating because they take on so many different, beautiful shapes and are constantly changing. Cloud-watching from Earth can be endlessly entertaining, but some of the most amazing ...

O Quy Ho Pass is also known as Hoang Lien Pass (because the pass crosses the Hoang Lien Son mountain range) or May (Clouds) Pass because the top of the pass is covered with clouds all year round.

WRAL viewers submitted photos of beautiful clouds they saw in the sky before Wednesday night's storms. WRAL meteorologist Elizabeth Gardner said they're actually quite common. "It's a beautiful ...