Earth Science & Climate

What Is a Tropic? Defining the Tropical Zone

Why Is the Inner Core Hotter Than the Outer Core?

Does Aerating Your Lawn Help With Drainage?

How Many Cubic Feet Are in a Ton of Topsoil?

What Is the Average Annual Rainfall in Chicago?

What Does “If It’s White Goodnight” Mean?

Do Black Holes Go Away? The Process of Evaporation

How to Spot Mars in the Night Sky

What Is the Average Temperature in Florida in December?

Which Planets Are the Most Dense?

What Is a Roche Limit and How Does It Work?

At What Temperature Do Windshields Frost?

Why Is the Galaxy Flat? The Science of Spinning Discs

How Scientists Believe the Earth’s Four Layers Were Formed

What Does Neptune Look Like Inside?

How to Read Weather Forecast Highs and Lows

How Much Water Evaporates From a Pool in Arizona?

When Was Hurricane Michael in Florida?

What Is the Difference Between a Confined and Unconfined Aquifer?

How Tall Are Tsunamis? From the Ocean to the Shore