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.
|Supersonic jet promises N.Y. To L.A. in 2.5 hours|
|Frozen's Elsa and Anna teach girls to code|
|How to become wealthy: It's simpler than most 'experts' say|
|BlackBerry will buy your iPhone|
|Drone pilot wanted: Starting salary $100,000|