Scientists say they’ve confirmed Earth’s inner core has been slowing down. Here’s what it could mean — and why the topic has been the subject of fierce debate.

The inner core was discovered in 1936, and its size (about 20% of Earth's radius) is one of the best-constrained properties of the deep Earth.

The surface of Earth's inner core may be shape-shifting, new research suggests. The study, published Feb. 10 in the journal Nature, looked at earthquake waves that have skimmed the edge of the ...

Scientists found that the inner core’s structure changes as it rotates. It deforms at its border, potentially accumulating more material in some areas and less in others — almost like creating ...

The core of the Red Planet may be filled with sulfur. New experiments have shown that the core of Mars formed much faster ...

Well, the verdict is in. The Moon is not made of green cheese after all.

It is true that the outer core generates electrical currents that sustain the planet’s magnetic field, but Vidale says shifts in the Texas-size inner core are too minuscule to have an impact.

Now, the inner core is rotating more slowly than before the shift. There's no risk of a cataclysmic disaster of dead birds falling from the sky or skin-blistering sunburns in seconds, like in the ...

The Utah Office of Energy Development is poised to study the potential of drilling a pump station to access geothermal energy ...

Scientists say they’ve confirmed Earth’s inner core has been slowing down. Here’s what it could mean — and why the topic has been the subject of fierce debate.