Scientists Solve Mystery of Earths Shifting Poles

Prof Adam Maloof, Associate Professor of Geosciences, Earth History, to appear on NPR SCIENCE FRIDAY (Nov. 9th)Did you know that Earths solid exterior can move around over its core, causing the planets poles to wander back and forth? Adam Maloof, associate professor of geosciences at Princeton University, discusses the consequences of these shifts, and what may be causing them.http://sciencefriday.com/segment/11/09/2012/scientists-solve-mystery-of-earth-s-shifting-poles.html