Beneath Earth s surface, nearly 3,000 kilometers down, lies a mysterious layer where seismic waves speed up inexplicably. For ...

We don't even know how old it is. Luckily, mineral physics is bringing us closer to solving the mystery. The inner core is responsible for Earth's magnetic field, which acts like a shield ...

We don’t even know how old it is. Luckily, mineral physics is bringing us closer to solving the mystery. The inner core is responsible for Earth’s magnetic field, which acts like a shield ...

This week, see how gold is leaking from the planet’s core, watch sharks sharing a communal meal, unearth Egyptian tombs, and ...

We don't even know how old it is. Luckily, mineral physics is bringing us closer to solving the mystery. The inner core is responsible for Earth's magnetic field, which acts like a shield ...

A ‘ghost plume’ identified deep in the mantle beneath Oman suggests there may be more heat flowing out of Earth’s core than ...

Deep inside Earth is a solid metal ball that rotates independently of our spinning planet, like a top whirling around inside a bigger top, shrouded in mystery. This inner core has intrigued ...

One mystery we haven't solved yet is how the core has "frozen" solid from a molten liquid state in its past. "The Earth’s inner core was once liquid, but has turned solid over time. As the Earth ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Deep inside Earth ...

Deep inside Earth is a solid metal ball that rotates independently of our spinning planet, like a top whirling around inside a bigger top, shrouded in mystery. This inner core has intrigued ...