Matthew Dorsey

Petrified Wood: How Old It Is & How We Know

If I Dug a Hole Through the Earth, Where Would I End Up?

Why Is a Year 365 Days? The Science and History

How Many Years of Geological Time Have Humans Existed on Earth?

What Did Earth Look Like 1 Million Years Ago?

How Hot Is the Mantle? Temperature Ranges and Heat Sources

Where Is Basalt Located? Oceanic and Continental Formations

Where Is Iridium Found on Earth and in Space?

What Did the Continents Look Like 65 Million Years Ago?

What Is the Geosphere and Why Does It Matter?

Why Can’t We Live in Antarctica? A Scientific Explanation

Which Layer Is Responsible for Earth’s Magnetic Field?

How Is Sand Made? From Rocks to Beaches

Is the Earth’s Inner Core Hotter Than the Sun?

Earth’s Surface: Composition, Features, and Shaping Forces

Is Granite a Sedimentary Rock?

Is California Going to Break Off Into the Ocean?

How Long Does It Take for Coal to Form?

Natural Processes That Add Carbon Dioxide to the Atmosphere

What Is Deposition in Earth Science?