Earth Day is on Tuesday, April 22, this year. The annual observation is set aside to increase awareness around environmental ...

Print this free Earth Day scavenger hunt and enjoy these other fun Earth Day activities for your family. Let us know which one is your favorite! All images courtesy of Two Kids and a Coupon Earth ...

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Scientists have uncovered new information about the Earth's core: it may not be completely solid. Instead, its center may be more malleable than expected and has changed shape in recent years.

The mantle is the rocky envelopment that surrounds the iron core of rocky planets. The structure and dynamics of Earth's lower mantle play ... "If you take kids, sometimes they do crazy things ...

The Earth's interior is composed of four layers ... in diameter. Although this inner core is white hot, the pressure is so high the iron cannot melt. The iron isn't pure—scientists believe ...

However, many years ago, the Earth looked very different to how it does today. Around 250 million years ago, all of the continents were joined together as one supercontinent called Pangea.