Earth Science & Climate

What Determines Sunrise and Sunset Times?

Is a Sea and an Ocean the Same Thing?

What Is Beringia? The Prehistoric Land Bridge

At What Temperature Do You Get Frost?

Is the Caspian Sea Freshwater or Saltwater?

What Was Beringia? The Land Bridge to the Americas

What Does a Waxing Moon Mean Astronomically?

How Spherules Form and What They Reveal About Earth’s History

What Are the Key Properties of Savanna Soil?

What Happened to the Tethys Sea?