Earth’s Inner Core: A Shifting, Spinning Mystery’s Latest Twist - The New York Times
https://www.nytimes.com/2023/01/23/science/earth-core-reversing-spin.htmlMultidecadal variation of the Earth’s inner-core rotation | Nature Geoscience
https://www.nature.com/articles/s41561-022-01112-zWhat’s Inside Earth’s Inner Core? Seismic Waves Reveal an Innermost Core. - The New York Times
https://www.nytimes.com/2023/02/23/science/earth-core-seismic-waves.html2002-10 The innermost inner core of the earth: Evidence for a change in anisotropic behavior at the radius of about 300 km2023-01 Multidecadal variation of the Earth’s inner-core rotation2023-02 Up-to-fivefold reverberating waves through the Earth’s center and distinctly anisotropic innermost inner core