Earth Science & Climate

When Did It Snow in Jacksonville, Florida?

What Is Obsidian Good For? From Tools to Spiritual Uses

Is a Geostorm Possible? The Risks of Extreme Space Weather

Is All Sand Made of Silica?

What Water Has the Highest pH Level?

What Are Daylight Hours and What Causes Them to Change?

What Is the Best Known Fault in the World?

Why Is Everything Wet in the Morning?

How Many Major Time Zones Is the Earth Divided Into?

Can You See the Northern Lights During the Day?

What Is the Streak of a Mineral and Why Is It Important?

Are There Volcanoes in Sicily? From Etna to the Aeolian Islands

What Is the Paleocene-Eocene Thermal Maximum (PETM)?

What Is the Focus of an Earthquake?

What Is a Cap in Weather Terms?

Are Sand Dunes Constructive or Destructive?

Why Is Kansas So Humid in the Summer?

What Is a Topographical Map and How Do You Read One?

How Much Bigger Is Earth Than Mars?

What Does It Mean When Clouds Are Orange?