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

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.

A rock formation spanning Ireland and Scotland may be the world's most complete record of "snowball Earth," a crucial moment in planetary history when the globe was covered in ice, finds a new ...