(CNN) -- Facebook's Mark Zuckerberg and his wife were the
second-biggest charitable donors in the United States last year, appearing
behind only billionaire Warren Buffett on a list of the nation's most generous
philanthropists.
Zuckerberg, along with wife Priscilla Chan, gave roughly
half a billion dollars ($498.8 million) to the Silicon Valley Community
Foundation, according to The Chronicle of Philanthropy.
The group released its annual Philanthropy 50 over the
weekend.
The Facebook founder and CEO was one of three tech-industry
titans in the list's top five.
Microsoft co-founder Paul Allen was fourth, with $309
million in contributions, mostly to the Allen Institute for Brain Science.
And Google co-founder Sergey Brin and wife Anne Wojcicki,
co-founder of genetic-testing company 23andME, were fifth, putting $223 million
into their Brin Wojcicki Foundation.
