Scientists discover ‘sunken worlds’ hidden deep within Earth’s mantle that shouldn’t be there

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. However, these mysterious blobs appear in places they should not, leaving researchers scratching their heads.

For decades, scientists have been building up a better picture of Earth’s interior by using…