Taking stock of Amazon's enormous ambition

Amazon is a giant company, but in reality, it's probably far bigger and involved in far more activities than most people are aware — think cancer research and police surveillance. Today on Front Burner, Wired writer Louise Matsakis, explains just how vast Amazon is and helps us grasp the implications of such a giant business. She brings insight into challenges that face Amazon, how the company could evolve in the future and why owner Jeff Bezos wants to colonize space.