Add Yahoo as a preferred source to see more of our stories on Google. Far beneath your feet, two giant “blobs” of dense rock hover above Earth’s core. (CREDIT: Edward Garnero/Mingming Li/Arizona State ...

An illustration of Earth as it existed during part of its formation billions of years ago, when an ocean of magma covered the surface of the planet and stretched thousands of miles deep into the core.

Deep beneath your feet, far beyond where any drill can reach, something strange is hiding. Two continent-sized blobs of rock sit just above Earth’s core, hot, dense and stubbornly different from ...