No one knows why the river of liquid iron flowing 1,400 miles beneath our feet just reversed course.

Scientists discovered a mysterious reversal in Earth’s molten core flow beneath the Pacific using satellite data from space.

Earth's core contains up to 45 times more hydrogen than the oceans do, making it the largest hydrogen reservoir on the planet, a new study suggests. Researchers found that this vast amount of hydrogen ...

A river of molten iron, more than 2,000 kilometers below the surface, appears to have pulled off something Earth scientists ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Here’s what you’ll learn when you read this story: Gaze across the blue marble that is Earth, and the ...

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are ...

Here’s what you’ll learn when you read this story: Where Earth got most of its water is a subject of debate, but a new study suggests that the planet’s largest reservoir of hydrogen is not the ocean, ...