Karl Albrecht - $23.5 billion: On Wednesday, Forbes released their list of 'The World's Billionaires.' With his brother Theo, Karl Albrecht is one of the owners of Aldi Sud, one of Germany's dominant grocers. The 10th richest man in the world, Albrecht is retired from daily operations and fiercely private. Shown here is a branch of the German supermarket chain, Aldi, in Berlin. Newscom
Amancio Ortega - $25.0 billion: Ortega owns textile giant Inditex, with 4,500 stores in 73 countries, which includes well-known brand Zara. Ortega owns multiple properties in Florida as well as Madrid, Paris, London, and Lisbon. Here, Ortega is seen in Coruna, Spain. Miguel Ropa/AFP/Getty Images/Newscom
Eike Batista - $27.0 billion: Batista is the year's biggest gainer with $19.5 billion. Most of Batista's wealth comes from OGZ, an oil-and-gas exploration company he founded in 2007. Batista helped Rio de Janiero win its bid for the 2016 Olympic Games by providing funds to the city's Olympic committee. Newscom
Bernard Arnault - $27.5 billion: Seen here with his son, Antoine, in Paris, France, Arnault owns the luxurious LVMH, which makes Louis Vuitton, Moet & Chandon, and is developing commercial properties in Shanghai. Arnault's father made a small fortune in construction, which helped to start Bernard's ventures in luxury goods and real estate. Antoine Arnault and his sister Delphine sit on the board of LVMH. Sipa Press/Newscom
Lawrence Ellison - $28.0 billion: The founder of Oracle bought out Sun Microsystems and acquired BEA Systems. Ellison, a sailboat racing enthusiast, is seen at a press conference after winning the 33rd America's Cup in Valencia, Spain, this year. Jaime Reina/AFP/Getty Images/Newscom
Lakshmi Mittal - $28.7 billion: The world's largest steelmaker ArcelorMittal, run by Lakshmi Mittal, is looking to expand its mills in Jharkhad and Orissa in India despite net profits falling and Mittal taking a pay cut this past year. Mittal is also funding a 400-foot sculpture for London's Olympic Park for the 2012 Summer Olympics. The Chairman and CEO of ArcelorMittal holds a press conference in Luxembourg in October. Sipa Press/Newscom
Mukesh Ambani - $29.0 billion: Ambani, with control over oil, gas, and petrochemicals in Reliance Industries, answers a question during the India Economic Summit in New Delhi, in this December 2007 photo. Ambani is one of eight Indians who made the Forbes rich list. He has a 27-story home in downtown Mumbai, and owns the cricket team the Mumbai Indians. Manpreet Romana/AFP/Getty Images/Newscom
Warren Buffett - $47 billion: From his Berkshire Hathaway shares, American Warren Buffet has gained $10 billion in the past year. Buffet took over Berkshire Hathaway in 1965 and used the company to invest in companies such as Geico, Dairy Quee, MidAmerican Energy, and electric-car maker BYD. Buffet is seen here in Omaha, Neb., after lunch at Piccolo's restaurant with about 150 college business students form around the United States. Kent Sievers/Omaha World Herald/PSG/Newscom
William Gates III - $53.0 billion: Though his gains number $13 billion this past year, Gates fell to Carlos Slim Helú in this year's rankings to become the second-richest man in the world. In addition to Microsoft, Gates has investments in Four Seasons hotels, Televisa, and Auto Nation. He stepped down from daily operations at Microsoft to focus on the Bill & Melinda Gates Foundation, which works to fight hunger, improve education, and combat malaria, tuberculosis, and AIDS. Gates smiles during the 'Bill & Melinda Gates Foundation Pledge,' at the World Economic Forum in Daovs, Switzerland, in January. Newscom
Carlos Slim Helú - $53.5 billion: The world's richest man is a telecom wiz, with $18.5 billion coming in in the last year. Helú also owns a construction conglomerate Impulsora del Desarrollo y el Empleo. He has stakes in Inbursa, The New York Times Co., and Bronco Drilling. The Mexican entrepreneur is seen here at a press conference in Mexico City in January. Susana Gonzalez/Newscom
British Prime Minister David Cameron urged Scottish voters not to use the independence vote to protest against his administration. 'If you don't like me I won't be here forever.... But if you leave the UK that will be forever.'
British Prime Minister David Cameron used his last visit to Scotland before a historic independence referendum this week to implore Scots to remain part of the United Kingdom, warning on Monday that a breakaway vote would be irreversible.