Something Made Earth's Molten Core Reverse Direction In 2010

ScienceAlert reports: In the molten ocean of iron churning in Earth’s outer core, a section deep beneath the Pacific Ocean suddenly reversed direction and started moving eastward against the planet’s usual westward flow. This happened in 2010, according to satellite measurements of Earth’s magnetic field, and scientists are still trying to figure out what caused it… [I]t seemed to have a large, wave-like structure — as though a chunk of molten core material suddenly thought better of where it wanted to go, surging in the other direction…