Continent-size islands deep inside Earth's mantle could be more than a billion years old, a new study finds.

Giant blobs that lurk near Earth's core are much older than scientists ... a seismologist at Utrecht University in the Netherlands, told Live Science. "The only thing that we know of these is ...

But there’s a catch with this crystal. While bismuth occurs naturally in the Earth’s crust ... the cooling process to produce specific shapes and sizes. This level of control allows for ...