Samples from Hawaii seem to contain material that passed across the boundary between the planet’s core and its mantle, nearly ...

Earth's largest gold reserves are not kept inside Fort Knox, the United States Bullion Depository. In fact, they are hidden ...

WASHINGTON, Aug 8 (Reuters) - Scientists using an ocean drilling vessel have dug the deepest hole ever in rock from Earth's mantle ... clues about our planet's most voluminous layer.