Earth Science & Climate

How Many Seismograms Are Required to Locate an Earthquake?

When Was the Last Time Mt. Hood Erupted?

How Much Does 2 Cubic Feet of Soil Weigh?

Is Arizona Water Hard or Soft?

How Were the Earth’s Layers Formed?

Does Lake Superior Freeze? The Science of Its Ice

Are Fossil Fuels Actually Fossils?

How Common Are EF5 Tornadoes? Statistics & Rarity

Why Is the Bering Sea So Rough?

What Is a Mineral? A Simple Explanation for Kids

What Is Planetary Differentiation?

Why Are Deserts in Danger of Flash Floods?

What Pressure Is a Hurricane? And Why It Matters

What Is Relief on a Map and How Is It Shown?

What Does an Areal Flood Advisory Mean?

What to Do With Sprinklers When It Freezes

Why Does Venus Flicker Like a Star?

Why Is the Pacific Northwest So Rainy?

Is Oxygen a Mineral? The Scientific Answer

Does Uranus Have a Core? Inside the Ice Giant