Below your feet, about 3,400 miles down, is Earth's inner core. The data implies that in 2010, the inner core reversed its rotational direction compared to the Earth's surface — a phenomenon called backtracking. Now, the inner core is rotating more slowly than before the shift. Related storiesBut a recent study offers a new way of looking at the data that could help settle the debate. Proving the inner core is backtrackingJohn Vidale is part of the new research that offers more evidence to the notion that the inner core is backtracking.

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Persons: aren't, It's, John Vidale, Stephen Gee, Vidale Organizations: Service, Business, University of Southern, USC Locations: University of Southern California, South Sandwich Islands