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.
|Amazon increases price of Prime|
|Want a job? Try the pot industry|
|401(k) fees: Still too high|
|Microsoft's next big headache: The Google Chromebook|
|GM ignition switch issue surfaced in 2001|