Earth is fortunate in having a magnetic field: it protects the planet and its life from harmful cosmic radiation. Other ...

Earth's rotation is speeding up, with July 22 being one of the shortest days ever recorded, 1.34 milliseconds less than 24 ...

Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and ...

Scientists break down the reasons why days are getting shorter—and the mystery they're still trying to solve about Earth's ...

But there has been one big mystery: Earth’s inner core, a solid ball of iron, only began to form about a billion years ago.

This summer a few factors are adding up to make a handful of Earth’s spins—those occurring on July 10, July 22 and August 5—more than a millisecond faster than the average of the past several decades.

For more than 100 years, scientists have puzzled over whether the Earth’s magnetic field had already been generated stably ...

The core is estimated to contain 99.999 percent of Earth’s gold, as well as high concentrations of platinum and other highly siderophile elements. These metals, which bond readily with iron ...

Over 99.999 percent of Earth's gold is locked away within the Earth’s metallic core, buried beneath 3,000 kilometers (1,864 miles) of solid rock.