FLIPPIN’ Poles!

The article focuses on Earth's magnetic poles, explaining their distinction from the fixed geographical poles and their significance for navigation and technology. It describes how Earth's magnetic field, generated by the movement of molten iron and nickel beneath the crust, causes the magnetic poles to shift and occasionally reverse, a phenomenon confirmed through geological evidence such as iron alignment in lava and radiocarbon levels in ancient New Zealand kauri tree rings. The preservation of the kauri tree in a peat bog, which slows decomposition due to its acidic, oxygen-poor environment, provided a detailed 1,700-year record of a magnetic pole reversal around 41,500 years ago. This research offers valuable insights into the dynamics of Earth's magnetic field over time. [Extracted from the article]