Earth’s core has ‘reversed’ its rotation. What does that mean for us?

Here is a 187-word summary of the news article: Scientists have recently discovered that the Earth's core has slowed down and even stopped moving relative to the Earth's crust. The Earth's core is made up of a liquid outer core and a solid inner core, both composed primarily of iron and nickel. For a long time, scientists believed the inner core rotated at a constant speed. However, seismic analyses have revealed that the core's rotation fluctuates, sometimes moving as fast as the crust and at other times appearing to stand still. This slowdown in the core's rotation began around 2009, with the core and crust moving more in sync. Since then, the core's movement has become even slower, with its rotational direction changing relative to the crust every 35 years, completing a full cycle every 70 years. While these changes are tiny, on the scale of milliseconds, they can impact astronomical measurements, satellites, the Earth's magnetic field, and even the climate. The discovery represents a remarkable change in our understanding of the Earth's internal processes.