Earth Science & Climate

Is Sand a Renewable or Nonrenewable Resource?

What Are the 3 Types of Volcanic Rock?

Do Comets Have Atmospheres? The Coma Explained

What Is the Most Dangerous Type of Storm?

What Would Happen If Ceres Hit Earth?

What Does an Eclipse Do to Earth and Its Inhabitants?

What Is a Freeze Watch and When Is One Issued?

Does the Big Dipper Move?

On Which Planet Would You Weigh the Least?

Do We See Stars in Real Time or the Past?

How Often Is Friday the 13th a Full Moon?

Does Colorado Have Glaciers? The Status of Glacial Ice

What Happens as a River Gets Older?

What Feeds Lake Powell? The Colorado River and Beyond

What Is the Partial Pressure of Oxygen at Sea Level?

What Carved This U-Shaped Valley?

How Far Away From the Sun Is Venus?

What Is the Diamond Ring Effect During an Eclipse?

How to Identify Opal Rock in the Field

What Gives Wind Its Mass? The Physics of Moving Air