A new study shows that the inner core changed shape in just a few decades, challenging previous assumptions and revealing ...

By Kenneth Chang The inner core at the center of the Earth, a ball of iron and nickel ... core’s outer boundary has noticeably changed shape over the past few decades. “The most likely thing ...

Now, a team of researchers has found compelling evidence that it’s changing shape right under our feet. Earth’s inner core — like a planet inside another planet — appears to move to its ...