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A major obstacle for future progress in microelectronics is reducing power consumption.  Devices that exploit the electron spin degree of freedom together with, or instead of, its charge, provide a pathway to meet this challenge.  Solid-state spin-based devices have already entered the marketplace for nonvolatile memory applications, and the door to broader computing applications is now open.  In this talk I will describe recently-discovered mechanisms, materials, and devices that offer a spin-based approach to augment conventional electronics as current technologies approach the end of their roadmap.