Scientists trace back strange behavior in South Atlantic magnetic field 11 million years - CNN

Strange behavior in a South Atlantic magnetic field can be traced back as far as 11 million years ago, and it's unlikely to be linked to any impending reversal of the Earth's magnetic field, researchers have found. https://www.cnn.com/2020/07/20/world/south-atlantic-anomaly-intl-scli-scn/index.html