Cloud-watchers can talk all about the interesting shapes they've noticed over the years. They may have been gazing out the car window during a road trip, or tanning on the beach, or on a morning walk.

The national meteorological service added that skilled or brave glider pilots often prefer flying with these types of clouds in the sky as “they can tell from the shape of the clouds where the ...

Following the sweeping path of a cold wave through the Arctic, the skies were alight with rare polar stratospheric clouds, which presented a rainbow-like show throughout the sky. Images of the ...