What's inside Earth quiz: Test your knowledge of our planet's hidden layers Two enormous blobs deep inside Earth appear to be the remnants of oceanic crust that was pushed down into the mantle ...

But a few years ago, Stephenson and colleagues found evidence Earth's inner core may actually have two distinct layers. "It's very exciting – and might mean we have to re-write the textbooks!" ...

Did Earth Really Once Have a Ring Around it? According to One Theory, Yes — And It Left A Mark 21 craters in ancient rock layers are all that's left of Earth's once flashy accesory.

Normally, younger rocks are deposited above older ones, forming predictable geologic layers. In the North Sea, this process ...

Scientists have identified mysterious 'blobs' about 1,200 miles under the Earth's surface that could cause massive volcanic eruptions.

The middle layer of our planet, called the mantle, is an important part of the habitability question. It’s intrinsic to the carbon cycle, for instance, which is required to form complex ...

Rare earth elements are necessary for modern technology, including green energy, but they only come from a few sources around the globe. New research has discovered them hiding in coal mines in ...

The Earth has two core layers: the inner core, a solid layer, and the outer core, a liquid layer. Surrounding the Earth’s core is the mantle.

While most of us take the ground beneath our feet for granted, written within its complex layers, like the pages of a book, is Earth's history. Our history. Research shows there are little-known ...