Not bragging but... by Alex

"Previous research had shown that the Earth's core rotates faster than the rest of the planet. However, scientists from the University of Cambridge have discovered that earlier estimates of 1 degree every year were inaccurate and that the core is actually moving much slower than previously believed – approximately 1 degree every million years......"

We could have told them that! Though it is possible that original estimates were right, and it was our actions that slowed it. Read about it - The Stone Summons