Earth & Space

When Is the Sun Closest to the Earth?

What Percentage of Space Have We Explored?

What Does Raw Jade Look Like? Identifying the Real Thing

How Much of Antarctica Is Land Beneath the Ice?

What Are Kettle Lakes and How Are They Formed?

What Is Spinning Water Called? Whirlpools, Vortices, and Eddies

Where Can Salt Be Found in Nature?

Where Is Molybdenum Mined and How Is It Processed?

When Does Fall Actually Start in Texas?

When Does Cold Weather Actually Start?

Why Is Volcanic Soil So Fertile?

How Did Betelgeuse Get Its Name?

Are There Tides in Lakes? Explaining the Science

What is a Lacustrine Environment?

How Is Limestone Made? The Process Explained

How Subduction Leads to Volcanic Activity

What Is a Solar Calendar and How Does It Work?

Why Do Magmas Rise Toward Earth’s Surface?

Why Is Antarctica the Coldest Place on Earth?

How Much of Earth Is Land? The Land-Water Ratio