In addition to Fortune's 40 Under 40 list, we're also keeping our eye on these 20 innovators, young guns from a wide range of industries and backgrounds.
|Homeless college students seek shelter during breaks|
|GM names Mary Barra as new CEO|
|Don't fight it. Bitcoin has a bright future|
|Snowden docs had NYTimes exec fearing for his life|
|Financial regulators unveil long-awaited Volcker Rule|