The change, which occurred between 2006 and 2008, was detected only recently during an analysis of data from a pair of satellites that once measured variations in Earth's gravity. Researchers believe the shift may have been triggered when the structure of some rocks near the boundary between
Washington D.C. [USA], Nov 14 (ANI): Did you know that we might be able to trace human life back to the reservoirs of oxygen-rich iron between the Earth's core and mantle?