Earth Science & Climate

What Time Does Dusk Start? The Science of Twilight

What Would Happen If Mars Disappeared?

Is Titan Bigger Than Mercury? A Size and Mass Comparison

What Is a Sound in Geography? Definition and Examples

Does Mount Rainier Always Have Snow?

What Is Fill Dirt? Its Composition and Uses

Do Hurricanes Cool the Ocean?

What Is Snow Depth and How Is It Measured?

How Much Area Does a Cubic Yard of Topsoil Cover?

Where Do Blue Diamonds Come From?

Which State Has the Hardest Water in the U.S.?

Is a Ruby a Diamond? The Science of Gemstones

What Characteristic of Earth Allows Water to Exist as a Liquid?

What Is the Approximate Length of the Geologic Time Scale?

Can I See Jupiter Without a Telescope?

Why Do We Study Geology?

How Do Scientists Know How Old Rocks Are?

What Is a Check Dam and How Does It Work?

What Does a 40% Chance of Snow Actually Mean?

How to Crush Lava Rock for Your Next Project