Researchers from Utrecht University have found in a study that there are two colossal peaks that reach heights of around 620 ...

Potential patches of Earth's ancient crust, sometimes called "sunken worlds," may have just been discovered deep within the mantle, thanks to a new way of mapping the inside of our planet.

In this diagram, the red lines represent the edges ... years or be much quicker depending on how humans use resources. The mantle is a semi-solid layer below the crust. There are no elements ...