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Earth pulses with a bizarre magnetic wave every 7 years

Far below the deepest boreholes, Earth’s core appears to keep its own rhythm, a slow magnetic throb that repeats roughly ...
Newsweek

Strange Little Magnetic Waves Discovered at Earth’s Core

Small magnetic waves have been discovered at Earth's core, with each oscillation working on a seven year cycle. Earth's magnetic field is generated by electric currents generated by the movement of ...
The New York Times

What’s Inside Earth’s Inner Core? Seismic Waves Reveal an Innermost Core.

Shaking from large earthquakes provides hints about something different at the center of the planet. By Kenneth Chang The inner core of the Earth appears to hold an innermost secret. Geology textbooks ...
New Scientist

Forces deep underground seem to be deforming Earth's inner core

Earth’s solid inner core appears to have changed shape in the past 20 years or so, according to seismic wave measurements – but the behaviour of these waves could also be explained by other shifts at ...