Business's hottest rising stars



And the winners are...
The mantra of Fortune's 2012 40 Under 40? Mobilize! All told, this year's list reveals a drive and a determination — indeed, a mobilization — at its core. Yes, it features plenty of Silicon Valley hotshots. But it also includes the CEO of a blue-chip beer brand, an airline chief who just placed the largest order in commercial aviation history, and Warren Buffett’s new lieutenant. Oh, and there's a new No. 1.

More Under 40s
More Under 40s
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.

Marissa Mayer: Ready to rumble at Yahoo
Mayer - No. 3 on the 40 Under 40 - is changing the culture and welcoming new faces to the troubled web company. But this new chief (and new mom) has miles to go before she sleeps.More

David Chang grows up
The Momofuku chef has settled down and become more serious -- but no less ambitious -- as he grows his pork bun empire. More

The photo portfolio
Meet the Globetrotter, the Ramen Rebel, the Sofa Surfer, and others in a selection of the most influential young people in business. More

Head of the class
What did Fortune's 40 look like in high school? Take a trip down memory lane with these yearbook photos. More

The Twitterati
A look at how this year's brightest are using social media to sway millions of followers in 140 characters or less. More

7 Under 40 job creators
Not only are Fortune's 40 impressive business leaders, many of their companies are hiring. We'll show you where. More

Hosain Rahman's Beautiful Failure
Before Tim Cook's public apology for Apple's maps mishap, the Jawbone CEO had a crisis of his own. The story of the flawed computer wristband and the letter that saved a company. More

Visualizer
What do the 40 Under 40 listen to? Where do they go to relax? And what causes do they support? Find out their playlists, play spots and pet causes with our visualizer.

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