Earth Science & Climate

How Hot Is a Star? From Core to Surface

What Is the Order of Colors in a Rainbow?

Is Mount Sinai a Volcano? The Mountain’s True Geology

Why Is Winter Air So Dry?

How Far Can Smoke Travel From a Fire?

What Is Dusk Time? The Three Phases of Twilight

Why Does the Moon Have More Craters Than the Earth?

What Are Eskers and How Do They Form?

When Did the Anthropocene Begin? The Evidence in the Rocks

How the Pangea Model Changed Our View of Earth