Earth's core slowing down, spinning in reverse: study

A recent study published in Nature reveals Earth's core has slowed down and is now spinning in reverse. The core, mainly iron and nickel, is 70% the size of the moon and rotates independently from the planet. Data from seismograms show the core's deceleration compared to the Earth's surface. The impact on daily life is minimal, with rotation changes only affecting day length by thousandths of a second.