The 'rule of 72' is a secret weapon to help keep credit card payments from spiraling out of control - and the beauty of it is ...

With a new Nike CEO, the move is part of the sports gear titan's evolving strategy and yet another chapter in the expansion of Kim Kardashian's business empire.

Nike is in a slump. Sales are down, its stock has lost more than a quarter of its value over the past year and its new CEO needs some help turning around the aging athletic company. Enter Kim ...