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.
|AT&T cuts prices again|
|The medical marijuana ad that never aired, despite contrary media headlines|
|The bull market at 5: Not old yet|
|China to fight pollution with drones|
|Get ready for 'over-the-top' TV|