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.
|Bill Gates launches multi-billion dollar clean energy fund|
|New Amazon drone video, brought to you by Jeremy Clarkson|
|Raspberry Pi's $5 computer sold out online in a day|
|Toys 'R' Us, Amazon and Walmart race to start Cyber Monday|
|We are witnessing a slow motion unicorn bust|