After over a decade, Warren Buffett is now the world's richest man again!  Buffett's net worth increased $10 billion to $62 billion, meanwhile Carlos Slim is at #2 with $60 billion, and Bill Gates dropped from #1 to #3 with $58 billion.  I found the following slides quite addictive, reading how each of these individuals made their massive fortunes:

• The world's billionaires
  
  
• Youngest billionaires
  
  
• Celebrity billionaires
  
  
• Billionaire bachelors
  
  
• Billionaire women we envy
  
  
• Self-made billionaires