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Marc Andreessen, Andreessen Horowitz
Marc Andreessen, Andreessen Horowitz
40 under 40 rank: 1

Over 3 years: no idea. Over 30 years: up and to the right. Huge economic growth and technological progress lies ahead, both in the U.S. and globally.

As told to Adam Lashinsky, senior editor at large


NEXT: Lorenzo Simonelli, GE Transportation
Last updated October 14 2010: 6:17 AM ET
40 under 40
Full List: Top 40
Full List: Top 40
Meet this years class of youthful movers and shakers. They're innovating, they're expanding, and they're not really thinking about the recession. More
Highest paid under 40
Highest paid under 40
Which young executives at public companies brought home the most bacon this year? And exactly how much bacon are we talking about? More
Ones to watch
Ones to watch
They may not have made the list this year, but we're keeping an eye on these rising stars. More
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