We finally know where two giant blobs in Earth's middle layer came from — and they're a mismatched pair. These strange regions in Earth's mantle, known as "large low velocity provinces" (LLVPs), are ...

Deep within Earth, there lies a mysterious layer called the D" layer. Located roughly 3,000 kilometers down, this zone sits just above the boundary between the planet's molten outer core and its ...

The Earth's interior is composed of four layers, three solid and one liquid—not magma but molten metal, nearly as hot as the surface of the sun. The deepest layer is a solid iron ball ...

Giant regions of the mantle where seismic waves slow down may have formed from subducted ocean crust, a new study finds.

An curved arrow pointing right. A hole in Earth's ozone layer created by man-made substances could be healed by the 2050s. Produced by Noah Friedman. Original reporting by Jessica Orwig.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Geologists have now unearthed ...