Does an anomaly in the Earth's magnetic field portend a coming pole reversal?: With our colleagues, we’ve focused our sampling on Iron Age village sites that dot the Limpopo River Valley, bordered today by Zimbabwe to the north, Botswana to the west and South Africa to the south. Sampling at Limpopo River Valley locations has ... Source: "South Africa" - BingNews War … [Read more...] about SA News: Does an anomaly in the Earth’s magnetic field portend a coming pole reversal?