24 Top innovators

Call them innovators, entrepreneurs, or good old-fashioned trouble-makers. These 24 disrupters have gone up against the odds as they've rattled old industries and tried to create new ones.

Jeremy Stoppelman and Russel Simmons
Jeremy Stoppelman and Russel Simmons
Mix MySpace-style social networking with Zagat-style reviews and a dollop of the Yellow Pages, and you get Yelp. Yelpers log on to the site to write reviews of their favorite - and least favorite - haunts, such as restaurants, bars, and dry cleaners. You'll go in looking for a restaurant tip but end up sticking around to meet some like-minded neighbors. The three-year-old company is the brainchild of co-founders Jeremy Stoppelman and Russel Simmons (in the white shirt), both of whom earned their Silicon Valley cred as star engineers at PayPal. --O.R.

Mark Gorton

Glueckman and Kantor

Hjalmar Winbladh

Craig Venter

Sunil Shaunak

Diane Greene

Nick Grouf

Caleb Chung

Stoppelman and Simmons

Glenn Kelman

Dan Olschwang

David Della Terza

Jack Memishian

Martin Eberhard

Vinod Khosla
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