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

Here is a 200-word summary of the news article: Scientists have discovered that the Earth's core has slowed down and even stopped moving in relation to the Earth's crust. This is a remarkable change that was first observed as early as 2024. The Earth's core is made up of a liquid outer layer and a solid inner layer, both composed primarily of iron and nickel. For a long time, it was assumed that the inner core rotated at a stable, constant rate beneath the Earth's surface. However, recent seismic analyses have revealed that the core's rotation is not constant, but rather fluctuates significantly. The core can move as fast as the Earth's crust and then appear to stop moving entirely, relative to the crust. This slowdown began in 2009, and the core seems to change its rotational direction every 35 years, completing a full cycle every 70 years. While the changes in rotational speed are tiny, on the order of milliseconds, they can have effects on astronomical measurements, satellites, the Earth's magnetic field, and even the climate. The public has only recently become aware of this remarkable shift in the core's behavior deep within the planet.