There's a lot more to Earth than meets the eye. Far from being just a roundish rock barreling through space, our planet is composed of several layers held together by intense forces of gravity.

A new way of measuring structures deep inside Earth has highlighted numerous previously unknown blobs within our planet's mantle. These anomalies are surprisingly similar to sunken chunks of Earth ...

Researchers rotated each piece 180 degrees relative to the layer above and below. They employed an approach called quasi-phase-matching, which alters the properties of light in a way that allows for ...