Scientists say they’ve confirmed a slowdown in Earth’s inner core rotation. Now what? CNNEarth's inner core reversed direction and is slowing down Business InsiderSomething very strange is happening to Earth's core, and scientists might finally know why BBC Science FocusEarth's Inner Core May Be Slowing Its Spin, Another Study Suggests Smithsonian MagazineEarth's core has reversed its movement and slowed down.