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.
|Heineken and Sam Adams boycott St. Patty's Day parades|
|$20 Amazon Prime hike won't scare off customers|
|Meet the SAT tutor to the 1%|
|Number of millionaire households in the U.S. reaches high|
|Quiznos files for bankruptcy|