Top 8 Tech Billionaires Who Dropped Out of College

First part of mission accomplished: Bill Gates, the most generous person on the planethas helped eradicate polio in India. In January the country announced its first polio-free year. Gates will continue to chip in $200 million a year to rid the world of a disease that is still endemic in Pakistan, Afghanistan and Nigeria. His Bill & Melinda Gates Foundation is also spearheading a malaria vaccine that is showing promise in ­clinical trials. Meanwhile the vaccine-spreading organization he founded, called GAVI, raised $4.3 billion in pledges aimed at distributing drugs to thwart the deadly infections that cause meningitis, pneumonia, and diarrhea in developing countries. He also has a new endeavor in the works: fixing agriculture. His foundation has committed more than $2 billion to small farmers. Less than one-fourth of his net worth is still held in Microsoft, whose shares are trading higher than they have been in 10 years; the rest is in private equity, bonds and stocks such as Ecolab and Mexican broadcaster Televisa. 

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