Bill Gates and Carlos Slim shake hands before a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a...
The world's two richest men, Bill Gates and Carlos Slim, seen at an event in Texcoco, Mexico, on February 13 are occasionally teaming up in their...
Bill Gates, founder of Microsoft Corp. And chairman of the Bill and Melinda Gates Foundation, applauds during a news conference announcing the launch...
Billionaires Bill Gates, left, and Carlos Slim hold a news conference to announce donations to Mexico's International Maize and Wheat Improvement...
Billionaires Bill Gates, left, and Carlos Slim hold a news conference to announce donations to Mexico's International Maize and Wheat Improvement...
Billionaires Bill Gates, left, and Carlos Slim hold a news conference to announce donations to Mexico's International Maize and Wheat Improvement...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
The top four Forbes 2009 billionaires, from left, Bill Gates, founder of Microsoft Corp., Warren Buffett, chairman of Berkshire Hathaway Inc., Carlos...
This combo image made of file pictures on March 5, 2008 shows US financier Warren Buffet , the richest man in the world according to Forbes magazine...
Mexican tycoon Carlos Slim speaks during a press conference to inform the state of the Carso group, 12 March 2007 in mexico City Slim appears between...
Billionaire Carlos Slim speaks during a news conference with Bill Gates, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Carlos Slim, left, speaks while Bill Gates listens during a news conference to announce donations to Mexico's International Maize and...
Billionaire Bill Gates, from left, Eruviel Avila Villegas, governor of state of Mexico, Enrique Martinez, Mexico's minister of Agriculture, and...
Eruviel Avila Villegas, governor of state of Mexico, from left, billionaire Bill Gates, Enrique Martinez, Mexico's minister of Agriculture, and...
Billionaire Bill Gates listens during a news conference with Carlos Slim, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Carlos Slim speaks during a news conference with Bill Gates, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaires Bill Gates, left, and Carlos Slim wait for the start of a news conference to announce donations to Mexico's International Maize and...
Billionaire Carlos Slim, from left, Eruviel Avila Villegas, governor of state of Mexico, Thomas Lumpkin, director of the International Maize and...
Billionaires Bill Gates, left, and Carlos Slim wait for the start of a news conference to announce donations to Mexico's International Maize and...
Billionaires Bill Gates, back left, and Carlos Slim wait for the start of a news conference to announce donations to Mexico's International Maize and...
Billionaire Bill Gates listens during a news conference with Carlos Slim, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Carlos Slim takes notes during a news conference with Bill Gates, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Carlos Slim listens during a news conference with Bill Gates, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Bill Gates speaks during a news conference with Carlos Slim, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Bill Gates speaks during a news conference with Carlos Slim, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaires Bill Gates, left, and Carlos Slim hold a news conference to announce donations to Mexico's International Maize and Wheat Improvement...
Billionaires Bill Gates, left, and Carlos Slim hold a news conference to announce donations to Mexico's International Maize and Wheat Improvement...
BillionaireS Carlos Slim, right, and Bill Gates, center, with Melinda Gates tour the research facility of the International Maize and Wheat...
Billionaire Carlos Slim listens during a news conference with Bill Gates, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaire Carlos Slim checks his mobile device during a news conference with Bill Gates, unseen, to announce donations to Mexico's International...
Billionaire Bill Gates listens during a news conference with Carlos Slim, unseen, to announce donations to Mexico's International Maize and Wheat...
Billionaires Bill Gates, left, and Carlos Slim hold a news conference to announce donations to Mexico's International Maize and Wheat Improvement...
Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Bill Gates during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration of their...
Sara Boettiger, CIMMYT representative, Eruviel Avila, governor of the state of Mexico, Bill Gates, Enrique Martinez, Secretary of Agriculture, Carlos...
Bill Gates and Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration...
Bill Gates and Carlos Slim during a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a collaboration...
Carlos Slim, Eruviel Avila governor of the state of Mexico and Bill Gates arrive to a press conference at the CIMMYT on February 13, 2013 in Texcoco,...
Eruviel Avila, governor of the state of Mexico, Bill Gates, Sara Boettiger, CIMMYT representative and Carlos Slim pose before a press conference at...
Bill Gates, Sara Boettiger, CIMMYT representative and Carlos Slim pose before a press conference at the CIMMYT on February 13, 2013 in Texcoco,...
Bill Gates, Sara Boettiger, CIMMYT representative and Carlos Slim arrive at a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico....
Bill Gates and Carlos Slim pose after a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a...
This combo image made of file pictures on March 5, 2008 shows US financier Warren Buffett , the richest man in the world according to Forbes magazine...
Bill Gates and Carlos Slim pose after a press conference at the CIMMYT on February 13, 2013 in Texcoco, Mexico. Gates and Slim announce a...
Billionaire Bill Gates, center, with blue shirt, rides in a golf cart during a tour of the research facility of the International Maize and Wheat...
Mexican tycoon Carlos Slim is offered the Citizen of Honour certificate by the municipalty of his family's hometown Jezzine in southern Lebanon on...
This composite shows from left to right: Bill Gates, founder and chairman of Microsoft Corp., Warren Buffett,Chairman of Berkshire Hathaway Inc....
These recent file photos show seven of the world's richest billionaires, according to Forbes magazine, which published its annual rich list on March...
New York, UNITED STATES: Mexican telecommunications tycoon Carlos Slim speaks at a discussion panel titled "What Can Business Do?" at the Clinton...
The world's two richest men, Bill Gates and Carlos Slim , appear at an event in Texcoco, Mexico, February 13 to inaugurate a new scientific...