EAST PALO ALTO, Calif. -- Facebook CEO Mark Zuckerberg and his wife are donating $5 million to help expand a community health center in Silicon Valley.
The gift -- announced Wednesday -- will cover part of the $29 million cost for adding another facility to the Ravenswood Family Health Center in East Palo Alto, Calif. That's not far from Facebook Inc.'s headquarters in Menlo Park, Calif.
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The new building is expected to be complete next year.
The 29-year-old Zuckerberg has become one of the world's richest people since he started Facebook's online social network at Harvard University nearly a decade ago. Forbes magazine estimates his wealth at $19 billion.
Zuckerberg has been funneling some of fortune into philanthropy. Last year, he and his wife, Priscilla Chan, donated Facebook stock valued at $900 million to the Silicon Valley Community Foundation.