There are 10 primary types of clouds on Earth. Here you can learn about what they're made of, how they form and how they are classified. Skip to main content. Open menu Close menu.

Steve Scafidi Jr.'s poem "Portraits of Abraham Lincoln with Clouds for a Ceiling" is published in "Lines in Long Array: A Civil War Commemoration: Poems and Photographs, Past and Present." In ...

In their new book, “Marshmallow Clouds: Two Poets at Play Among Figures of Speech,” Kooser and acclaimed fellow poet Connie Wanek offer 30 poems to inspire readers ages 10 and up to relish ...

Nacreous clouds also known as polar stratospheric clouds have been appearing across northern skies. We've rounded up some of the best photos of these rare 'rainbow clouds'. Skip to main content ...