Gates, Buffett And The Greatest Roundtable Of All-Time
By Randall Lane
In June FORBES convened the greatest-ever gathering of philanthropists: 161 billionaires or near-billionaires intent on solving the world's most intractable problems.

Bill Gates: My New Model For Giving
Bill Gates
While the private sector does a phenomenal job meeting human needs among those who can pay, there are billions of people who have no way to express their needs in ways that matter to markets.

Forbes Goes Inside Oprah Winfrey's School
By Clare O'Connor
Five years ago the talk show titan's altruism turned into the worst crisis of her adult life. Rather than abandon her South African school, Winfrey learned from her mistakes--and doubled down on what she believed in.

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The Forbes 400

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Readers Say
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Thoughts

The Forbes 400

The Richest People In America
By Luisa Kroll
For every name on the rich list who inherited his or her wealth, two more made it on their own. Nothing exceeds like success.

Chuck Feeney: The Billionaire Who Is Trying To Go Broke
Steve Bertoni
Chuck Feeney has earned $7.5 billion, but he's not on The Forbes 400. Instead, the Duty Free Shoppers founder has secretly given it away as fast as he's made it. All he's got left is $2 million--and credit for inspiring modern philanthropy.

Paul Allen's Quest To Reverse-Engineer The Brain
By Matthew Herper
Microsoft cofounder Paul Allen helped revolutionize the world with personal computers. Now he's betting a half-billion dollars that he can do something even more radical: Draw a circuit diagram of human consciousness.

A Lavish Hotel Project Unites Thailand's Sukosol Family
Ron Gluckman
A lavish hotel project unites the Sukosol family and revitalizes a Thai brand.

The One Man Space Program
Rich Karlgaard
New Forbes 400 member Elon Musk launches mankind.

Tech Wreck-Five Entrepreneurs That Missed the Forbes 400
Scott DeCarlo
Five tech entrepreneurs crossed the billion-dollar mark this winter. It was a short flight.

The Complete List
Forbes Staff
Entry level for this year: net worth of $1.1 billion. Plus: Thoughts on philanthropy from Leon Black, Shahid Khan, Pete Peterson, Laura Arrillaga-Andreessen, Marc Andreessen, Naveen Jain, Jon Bon Jovi, Jim Breyer, Marc Benioff and Stephen Schwarzman.

Billionaire Scorecard
Scott DeCarlo
Larry Ellison gained $8 billion this year--the same amount Mark Zuckerberg lost.

Meet The 20 Newcomers To The Forbes 400
By Caleb Melby
Twenty newcomers climbed into the ranks this year, including four immigrants.

Forbes 400 Drop-offs: Those Who Didn't Make The Cut
Edwin Durgy
These 32 moguls--some of them still billionaires--have fallen from our list.