The cloud formation was seen near Basilica Minore of Our Lady of Peñafrancia in Naga City following a mass.

Scientists already knew that ammonia influenced cloud formation over Antarctica, but the new work specifically tested the connection to penguin poop.

Gentoo penguins in Antarctica in 2017. Researchers found that guano from Adélie penguins releases a large amount of ammonia into the atmosphere, which can speed up cloud formation.

This is the breathtaking moment an adorable cloud formation appeared above the road in North Sulawesi, Indonesia. The footage shows the fluffy cumulus clouds arranged in a bizarre horizontal ...

Asperitas clouds are a distinctive, but relatively rare cloud formation that takes the appearance of rippling waves.

A rare cloud formation over Agassiz caught the eyes and imagination of locals and visitors on Wednesday (Feb. 26). Cathy Christiansen took a photo of the skies above Agassiz at about 3 p.m., ...

From a stunning cloud formation to a tasty cup of hot chocolate, here's what caught Suzanne Le Mignot and and Ed Curran's eye this week.

What makes this type of cloud formation so unique and how do they form? Weather satellite imagery shows the so-called cloud streets that formed over Southeast Texas on Monday.

TRI-CITIES, Tenn. (WJHL) — News Channel 11 viewers captured stunning, rare clouds in the Tri-Cities Sunday. The formations are called “undulatus asperatus,” which loosely translates to … ...

A rare cloud formation called the Taieri Pet was seen over New Zealand. NASA's satellite captured an image of this cloud. The cloud is formed due to north-westerly winds over the Otago region ...

In a newly published study, scientists show that microplastic particles can have the same effects, producing ice crystals at temperatures 5 to 10 degrees Celsius warmer than droplets without ...

Clouds are important parts of Earth’s complex weather system, with effects on precipitation, temperature and climate. Why it matters Ice in clouds has important effects on weather and climate ...